diff --git a/src_en/api.set_blackbox.txt b/src_en/api.set_blackbox.txt
new file mode 100644
index 0000000000000000000000000000000000000000..79a87140e58985a87e7c9ef4ee05f1954da8f335
--- /dev/null
+++ b/src_en/api.set_blackbox.txt
@@ -0,0 +1,22 @@
+<h3 id='___set_blackbox'>set_blackbox</h3>
+<pre>Set Blackbox on Modules
+<b>Usage:</b> set_blackbox(@modules, @options);
+@module: Module names to be set as blackbox, accept wild card '*'
+@options:
+   -hier: Set blackbox on the module and its sub-hierarchical modules
+          Only valid on module name without '*'
+
+<b>Note:</b> This command can be used multiple times
+
+<b>Examples:</b>
+
+#1. Set Blackbox on DW modules
+set_blackbox("*DW_pipe*");
+
+#2. Set Blackbox on 'ABC' and 'DEF' modules
+set_blackbox("ABC", "DEF");
+
+#3. Set Blackbox on memory_control and its sub-hierarchical modules. Set Blackbox on one DW as well
+set_blackbox("memory_control", "-hier");
+set_blackbox("DW_adder_123");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_bound_opti.txt b/src_en/api.set_bound_opti.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7bf9ab691c2d496e03b03729b59f280a0082c6c4
--- /dev/null
+++ b/src_en/api.set_bound_opti.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_bound_opti'>set_bound_opti</h3>
+<pre>Set boundary optimization checking 
+<b>Usage:</b> set_bound_opti($val);
+$val: 0, disable boundary optimization checking
+      1, enable boundary optimization checking (default)
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_buffer.txt b/src_en/api.set_buffer.txt
new file mode 100644
index 0000000000000000000000000000000000000000..87cd0be28cb0e36f872433eaa9f0f6176024bba1
--- /dev/null
+++ b/src_en/api.set_buffer.txt
@@ -0,0 +1,9 @@
+<h3 id='___set_buffer'>set_buffer</h3>
+<pre>Set buffer type. The tool automatically picks one if the command is not called (LLM: buffer name)
+<b>Usage:</b> set_buffer($buffer);
+$buffer: Lib cell name for buffer
+
+<b>Examples:</b>
+
+set_buffer("BUFX2");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_buffer_distance.txt b/src_en/api.set_buffer_distance.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fd8294630f590f689a071ae6f17242ee4633bc75
--- /dev/null
+++ b/src_en/api.set_buffer_distance.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_buffer_distance'>set_buffer_distance</h3>
+<pre>Set distance limit for inserting buffer
+<b>Usage:</b> set_buffer_distance($distance_val);
+$distance_val: distance to insert buffer, in um
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_clock_uncertainty.txt b/src_en/api.set_clock_uncertainty.txt
new file mode 100644
index 0000000000000000000000000000000000000000..57c5888da31eb36b934edd7c21dc42932a790521
--- /dev/null
+++ b/src_en/api.set_clock_uncertainty.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_clock_uncertainty'>set_clock_uncertainty</h3>
+<pre>Timing command. Set clock uncertainty
+<b>Usage:</b> set_clock_uncertainty($value);
+$value: Uncertainty value
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_cluster_command.txt b/src_en/api.set_cluster_command.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5b0d26079c94766efe34dfff98b6efe1c965a47d
--- /dev/null
+++ b/src_en/api.set_cluster_command.txt
@@ -0,0 +1,11 @@
+<h3 id='___set_cluster_command'>set_cluster_command</h3>
+<pre>Set cluster command in parallel fault verification
+<b>Usage:</b> set_cluster_command($cluster_command);
+$cluster_command: Command to submit jobs to cluster computers
+
+<b>Examples:</b>
+
+#1. Set cluster command 
+set_cluster_command("bsub_lsf -queue");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_cluster_timeout.txt b/src_en/api.set_cluster_timeout.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d20f1bbc76ea2459615ea709607a86df6a352c70
--- /dev/null
+++ b/src_en/api.set_cluster_timeout.txt
@@ -0,0 +1,13 @@
+<h3 id='___set_cluster_timeout'>set_cluster_timeout</h3>
+<pre>Set time out for cluster command
+<b>Usage:</b> set_cluster_timeout($time_in_seconds);
+$time_in_seconds: An integer number in seconds
+
+<b>Note:</b> cluster time out number should be large than solver time out
+
+<b>Examples:</b>
+
+#1. Set solver time out to ~12 hours
+set_cluster_timeout(43200);
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_constraints.txt b/src_en/api.set_constraints.txt
new file mode 100644
index 0000000000000000000000000000000000000000..22f403700e507f5a3ef9b1ec6d39b7687bc7448d
--- /dev/null
+++ b/src_en/api.set_constraints.txt
@@ -0,0 +1,37 @@
+<h3 id='___set_constraints'>set_constraints</h3>
+<pre>Set constraints for map_spare_cells command
+<b>Usage:</b> set_constraints(@options);
+@options:;
+   -type type_constraint : Set spare cell type constraint, type_constraint is a string 
+                           listing spare cells separated by ',', get_spare_cells should not be used if -type is present
+   -num num_constraint   : Set spare cell number constraint, num_constraint is a string 
+                           in the format of 'mux<16,nand<18'
+   -type_limit limit_string : Set cell type limit to be less than a number, for example A9TR type less than 10, 'A9TR<10'
+                             All constraints is separated by ',' in the format of 'X8B<9,X0P5A<1'
+<b>Note:</b> The number constraint only controls the number of spare types to be used. The spare gates list should have 
+      'nand/and', 'nor/or' and 'inv' types of leaf cells for synthesis mapping, and have spare flops for direct mapping, 'mux' is optional. 
+      If used with get_spare_cells command, this command should be used after get_spare_cells, check example #3 
+
+<b>Examples:</b>
+
+#1. Use less than 16 'mux' and less than 18 'nand' spare gates in map_spare_cells
+get_spare_cells("u_Spare*/*spr_gate*");
+set_constraints('-num', 'mux<16,nand<18');
+map_spare_cells;
+
+
+#2. Use NAD2X1 NOR2X1 INVX1 and MUX2X1 as spare type gates
+set_constraints('-type', 'NAND2X1,NOR2X1,INVX1,MUX2X1');
+map_spare_cells;
+
+#3. Set constraint after spare list created 
+get_spare_cells("u_Spare*/*spr_gate*");
+set_constraints('-num', 'and<1'); # So that no AND spare gate will be used
+map_spare_cells;
+
+#4. Set type limit after spare list created
+get_spare_cells("u_Spare*/*spr_gate*");
+set_constraints('-type_limit', 'ULVT<5,ELVT<6'); 
+map_spare_cells;
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_cutpoint_thresh.txt b/src_en/api.set_cutpoint_thresh.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2f1cbbb840037f3218e8518a6fed49135f1aa487
--- /dev/null
+++ b/src_en/api.set_cutpoint_thresh.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_cutpoint_thresh'>set_cutpoint_thresh</h3>
+<pre>Set Cutpoint Threshold
+<b>Usage:</b> set_cutpoint_thresh($val);
+$val: Threshold value, default 100 
+     </pre>
\ No newline at end of file
diff --git a/src_en/api.set_cutpoint_ultra.txt b/src_en/api.set_cutpoint_ultra.txt
new file mode 100644
index 0000000000000000000000000000000000000000..234a890440637477e0fe047f27fa497df5d8113a
--- /dev/null
+++ b/src_en/api.set_cutpoint_ultra.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_cutpoint_ultra'>set_cutpoint_ultra</h3>
+<pre>Set the level in doing CutPoint Ultra (LLM: cutpoint ultra)
+<b>Usage:</b> set_cutpoint_ultra($val);
+$val: 0, Disable cutpoint ultra
+      1, Enable cutpoint ultra (default)
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_define.txt b/src_en/api.set_define.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1640b3e15ec451e14733c7d30f445ebc9ea03118
--- /dev/null
+++ b/src_en/api.set_define.txt
@@ -0,0 +1,21 @@
+<h3 id='___set_define'>set_define</h3>
+<pre>Set define (LLM: define variable)
+<b>Usage:</b> set_define($define, $value, @options);
+@options:
+    -imp: The define is for Implementation only
+    -ref: The define is for Reference only
+$define: The define item
+$value: The value, optional
+
+<b>Examples:</b>
+
+#1. Set define SYNTHESIS for both netlists
+set_define("SYNTHESIS");
+
+#2. Set define NO_DFT_LOGIC for Reference only
+set_define("NO_DFT_LOGIC", "-ref");
+
+#3. Set define SIMULATION to 0
+set_define("SIMULATION", 0);
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_detect_points.txt b/src_en/api.set_detect_points.txt
new file mode 100644
index 0000000000000000000000000000000000000000..afb2e30ff1cc204b661e584e7ca8ae2bdf3d0ccf
--- /dev/null
+++ b/src_en/api.set_detect_points.txt
@@ -0,0 +1,19 @@
+<h3 id='___set_detect_points'>set_detect_points</h3>
+<pre>set detect points
+<b>Usage:</b> set_detect_points(@points, @options);
+@points: Detect points 
+@options:
+   -help: Print this info
+
+<b>Note:</b> The command can be run multiple times
+
+<b>Examples:</b>
+
+#1. Set data_error_ml as detect points
+set_detect_points("data_error_ml");
+
+#2. Set data_error_ml and u_cpu/err_det_reg as detect points
+set_detect_points("data_error_ml");
+set_detect_points("u_cpu/err_det_reg");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_disable_cross_hierarchy_merge.txt b/src_en/api.set_disable_cross_hierarchy_merge.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9f7461c702671a9e4221694953108fab15ffae00
--- /dev/null
+++ b/src_en/api.set_disable_cross_hierarchy_merge.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_disable_cross_hierarchy_merge'>set_disable_cross_hierarchy_merge</h3>
+<pre>Set this variable to disable cross hierarchy register merging
+<b>Usage:</b> set_disable_cross_hierarchy_merge($value);
+$value: 0, disable
+        1, enable. Default
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_disable_lib_cache.txt b/src_en/api.set_disable_lib_cache.txt
new file mode 100644
index 0000000000000000000000000000000000000000..00670c67a87f18450e648400d09e48a6bbf0aa29
--- /dev/null
+++ b/src_en/api.set_disable_lib_cache.txt
@@ -0,0 +1,7 @@
+<h3 id='___set_disable_lib_cache'>set_disable_lib_cache</h3>
+<pre>Disable liberty file cache
+<b>Usage:</b> set_disable_lib_cache($value);
+$value: 0, enable liberty file cache (default)
+        1, disable liberty file cache
+   
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_dont_fix_modules.txt b/src_en/api.set_dont_fix_modules.txt
new file mode 100644
index 0000000000000000000000000000000000000000..dd40dff7f5c0f951b46a92df59be018f097304a0
--- /dev/null
+++ b/src_en/api.set_dont_fix_modules.txt
@@ -0,0 +1,10 @@
+<h3 id='___set_dont_fix_modules'>set_dont_fix_modules</h3>
+<pre>Set dont fix property on modules
+<b>Usage:</b> set_dont_fix_modules(@modules);
+@module: Module names not to be fixed
+
+Example:
+
+#1. Set dont fix on pcie_ctrl and pcie_top module
+set_dont_fix_modules("pcie_ctrl", "pcie_top");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_dont_use.txt b/src_en/api.set_dont_use.txt
new file mode 100644
index 0000000000000000000000000000000000000000..78903216b528597c623462dd6e470700cf01129a
--- /dev/null
+++ b/src_en/api.set_dont_use.txt
@@ -0,0 +1,20 @@
+<h3 id='___set_dont_use'>set_dont_use</h3>
+<pre>Set dont use property on library cells
+<b>Usage:</b> set_dont_use(@cell_list);
+@cell_list: List of the dont use cells which is not used in automatic ECO. Wild card '*' is supported
+
+<b>Note:</b> If the command is used multiple times, the latest command overrides the previous ones
+
+<b>Examples:</b>
+
+#1. Don't use these two cells
+set_dont_use("INVX30","AND2X24");
+
+#2. Don't use power cell matching PWR_
+set_dont_use("PWR_*");
+
+#2. If run two times, the second one has effect, set dont use on "CINV_*"
+set_dont_use("SINV_*");
+set_dont_use("CINV_*");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_eco_effort.txt b/src_en/api.set_eco_effort.txt
new file mode 100644
index 0000000000000000000000000000000000000000..76e6749bfb7bdbc6481c63675a327223aa93b271
--- /dev/null
+++ b/src_en/api.set_eco_effort.txt
@@ -0,0 +1,10 @@
+<h3 id='___set_eco_effort'>set_eco_effort</h3>
+<pre>ECO setting. Set ECO effort
+<b>Usage:</b> set_eco_effort($effort);
+$effort: One of the three choices, high, medium and low. By default, high effort is used
+
+<b>Examples:</b>
+
+#1. Change ECO effort to medium
+set_eco_effort("medium");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_eco_point_json.txt b/src_en/api.set_eco_point_json.txt
new file mode 100644
index 0000000000000000000000000000000000000000..988c720763b3adaf07938bce296c790a0dc0300f
--- /dev/null
+++ b/src_en/api.set_eco_point_json.txt
@@ -0,0 +1,8 @@
+<h3 id='___set_eco_point_json'>set_eco_point_json</h3>
+<pre>Set a JSON file name for saving the ECO point data. 
+The JSON file can be applied to another netlist ECO, so that the full LEC has no need to be rerun
+<b>Usage:</b> set_eco_point_json($json_name);
+$json_name: The JSON file name
+
+<b>Note:</b> This command should be run before fix_design
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_equal.txt b/src_en/api.set_equal.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ffd27c157851badb17f0307f5977840119b319d7
--- /dev/null
+++ b/src_en/api.set_equal.txt
@@ -0,0 +1,22 @@
+<h3 id='___set_equal'>set_equal</h3>
+<pre>ECO setting. Set two points to be equivalent in the Reference and Implementation Netlists
+             The points can be input port, flop instance or output pin of black-box.
+             The point names should have 'i:' or 'r:' as prefix to indicate they are for the Reference or Implementation, or
+             the first point is assumed as Reference and the second Implementation.
+             Both of the points can be from Reference or Implementation
+<b>Usage:</b> set_equal($ref_point, $imp_point);
+$ref_point: The point in the Reference Netlist. It should be the first argument if it doesn't have 'i:' or 'r:' as prefix
+$imp_point: The point in the Implementation Netlist. It should be the second argument if it doesn't have 'i:' or 'r:' as prefix
+
+<b>Examples:</b>
+
+#1. Input port 'in_a' in Reference Netlist is equivalent to input port 'in_b' in Implementation Netlist in top module
+set_top('top_module');
+set_equal('r:in_a', 'i:in_b');
+ 
+#2. Flop instance 'subinst/flopa_reg' is equivalent to input port 'IN0' in the Implementation Netlist
+set_top('top_module');
+set_equal('i:subinst/flopa_reg', 'i:IN0');
+fix_design();
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_error_out.txt b/src_en/api.set_error_out.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a59b14bbf022c825f1a3c4a14a6230b174892541
--- /dev/null
+++ b/src_en/api.set_error_out.txt
@@ -0,0 +1,13 @@
+<h3 id='___set_error_out'>set_error_out</h3>
+<pre>Set error out setting
+<b>Usage:</b> set_error_out($value);
+$value: 1, Abort the program when APIs have run error, default setting
+        0, Ignore the error and continue the program
+
+<b>Examples:</b>
+
+# Program continues when there is error in change_pin
+set_error_out(0);
+change_pin("nonexisting_instance/A", "1'b0"); # It will continue, even though nonexisting_instance is not in the database
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_exit_on_error.txt b/src_en/api.set_exit_on_error.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9312f4bd1865a9eb1ca3f9646887cb11438d212c
--- /dev/null
+++ b/src_en/api.set_exit_on_error.txt
@@ -0,0 +1,7 @@
+<h3 id='___set_exit_on_error'>set_exit_on_error</h3>
+<pre>Whether the tool should exit when the script runs into an error
+<b>Usage:</b> set_exit_on_error($error, $bit);
+$error: Error pattern, wild card support. 'E-001', 'E-*'
+$bit: 1, Exit on the error, default
+      0, Don't exit on the error
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_exit_on_warning.txt b/src_en/api.set_exit_on_warning.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b0e66b6306e58b7deb9e3e61b0c27e860196a033
--- /dev/null
+++ b/src_en/api.set_exit_on_warning.txt
@@ -0,0 +1,7 @@
+<h3 id='___set_exit_on_warning'>set_exit_on_warning</h3>
+<pre>Whether the tool should exit when the script runs into a warning
+<b>Usage:</b> set_exit_on_warning($warning, $bit);
+$warning: Warning pattern, wild card support. 'W-001', 'W-*'
+$bit: 1, Exit on the warning
+      0, Don't exit on the warning, default
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_false_path.txt b/src_en/api.set_false_path.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4bc9c8da42958e212d0d8edd4ade81033e06bda6
--- /dev/null
+++ b/src_en/api.set_false_path.txt
@@ -0,0 +1,14 @@
+<h3 id='___set_false_path'>set_false_path</h3>
+<pre>Timing command. Set false path
+<b>Usage:</b> set_false_path(@options);
+@options:
+    -help: Print this information
+    -from: $startpoint, set false path on the starting point
+    -to:   $endpoint, set false path on the ending point
+    -through: $through_point, set false path on the through point
+
+<b>Examples:</b>
+
+#1. Set false path on u_control/u_subsm/state_reg_* as from points
+set_false_path("-from", "u_control/u_subsm/state_reg_*");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_floating_as_zero.txt b/src_en/api.set_floating_as_zero.txt
new file mode 100644
index 0000000000000000000000000000000000000000..41eb0e3656ffb61ca5a43ace0fae01710c32d87e
--- /dev/null
+++ b/src_en/api.set_floating_as_zero.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_floating_as_zero'>set_floating_as_zero</h3>
+<pre>Set floating net as constant zero (LLM: floating zero)
+<b>Usage:</b> set_floating_as_zero($value);
+$value: 0, disable floating net as constant zero
+        1, enable floating net as constant zero (default)
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_flop_default_eco.txt b/src_en/api.set_flop_default_eco.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2798677451cc5aa22bade2b7b29266efb3168c0e
--- /dev/null
+++ b/src_en/api.set_flop_default_eco.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_flop_default_eco'>set_flop_default_eco</h3>
+<pre>Set flop default eco by inverting input pin and output pin
+<b>Usage:</b> set_flop_default_eco($value);
+$value: 1 to enable flop default eco by inverting input pin and output pin
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_flop_merge_enable.txt b/src_en/api.set_flop_merge_enable.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5824ad60fb39de5516eccc8e86234dd235bd0aa3
--- /dev/null
+++ b/src_en/api.set_flop_merge_enable.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_flop_merge_enable'>set_flop_merge_enable</h3>
+<pre>Inside module flop merge enable
+<b>Usage:</b> set_flop_merge_enable($setting,@options);
+$setting: 0, disable inside module flop merge 
+          1, enable inside module flop merge (default)
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_high_effort.txt b/src_en/api.set_high_effort.txt
new file mode 100644
index 0000000000000000000000000000000000000000..844bc224a28a9c68208a8cf49588ae0bd2110820
--- /dev/null
+++ b/src_en/api.set_high_effort.txt
@@ -0,0 +1,31 @@
+<h3 id='___set_high_effort'>set_high_effort</h3>
+<pre>Set high ECO effort on modules (LLM: effort high)
+<b>Usage:</b> set_high_effort(@options);
+@options:
+    -help: Print this information
+    -include module_list: Only set high ECO effort on the modules listed,
+                         module_list has format of module names separated by ',', wild card is acceptable
+                         For example, 'mem_control,dma_*'
+    -exclude module_list: Exclude high ECO effort on the modules listed
+                         module_list has format of module names separated by ',', wild card is acceptable
+                         For example, 'mem_control,dma_*'
+    -timeout time_in_seconds: Set time out for each run, default to time out in 900 seconds
+                         time_in_seconds is an integer indicating time out in seconds
+
+<b>Examples:</b>
+
+#1. Set ECO high effort on all modules under ECO
+set_high_effort();
+
+#2. Set ECO high effort on module 'mem_control_1'
+set_high_effort('-include', 'mem_control_1');
+
+#3. Set ECO high effort on modules matching 'mem_control_*' and modules matching 'dma_*'
+set_high_effort('-include', 'mem_control_*,dma_*');
+
+#4. Enable ECO high effort, but excluding module 'mem_control_1  '
+set_high_effort('-exclude', 'mem_control_1');
+
+#5. Enable ECO high effort with time out in 600 seconds
+set_high_effort('-timeout', 600);
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_ignore_instance.txt b/src_en/api.set_ignore_instance.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4a85b8fa698595ae0297eaea603ad629d8a0c785
--- /dev/null
+++ b/src_en/api.set_ignore_instance.txt
@@ -0,0 +1,18 @@
+<h3 id='___set_ignore_instance'>set_ignore_instance</h3>
+<pre>ECO setting. Set ignored sequential or blackbox instances in ECO
+<b>Usage:</b> set_ignore_instnace(@ignored_instances)
+@ignored_instances: Instances to be ignored in ECO, accept wild card '*'
+
+<b>Examples:</b>
+ 
+#1. Ignore instances matching RAND_CNT_reg* in ECO
+set_top('VIDEO_TOP');
+set_ignore_instance('RAND_CNT_reg*');
+set_top('DESIGN_TOP');
+fix_design();
+
+#2. Ignore instances matching current_state_reg* in instance u_video
+set_top('DESIGN_TOP');
+set_ignore_instance('u_video/current_state_reg*');
+fix_design();
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_ignore_network.txt b/src_en/api.set_ignore_network.txt
new file mode 100644
index 0000000000000000000000000000000000000000..589864023888743b37a08afa9f9243b9f666a89e
--- /dev/null
+++ b/src_en/api.set_ignore_network.txt
@@ -0,0 +1,16 @@
+<h3 id='___set_ignore_network'>set_ignore_network</h3>
+<pre>ECO setting. Set ignore network in ECO
+<b>Usage:</b> set_ignore_network(@ignored_nets, @options)
+@ignored_nets: Net and its network to be ignored in ECO, accept wild card '*'
+@options:
+   -help: Print this information
+   -pin:  @ignored_nets are in pin format, for example, 'DONT_mux_clk/PIN_Y'
+
+<b>Examples:</b>
+
+#1. Ignore scan_en and scan_in
+set_ignore_network('scan_en*', 'scan_in*'); 
+
+#2. Ignore PAD PAD_SCAN_EN's output pin 'core' and its network
+set_ignore_network('PAD_SCAN_EN/core', '-pin'); 
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_ignore_output.txt b/src_en/api.set_ignore_output.txt
new file mode 100644
index 0000000000000000000000000000000000000000..93d437a581ae18a4c9dc76ff8289bc50d4eafa9f
--- /dev/null
+++ b/src_en/api.set_ignore_output.txt
@@ -0,0 +1,23 @@
+<h3 id='___set_ignore_output'>set_ignore_output</h3>
+<pre>ECO setting. Set ignore output ports
+<b>Usage:</b> set_ignore_output(@ignored_ports, @options)
+@ignored_ports: Output ports to be ignored, accept wild card '*'
+@options:
+   -help: Print this information
+   -both: Apply to both Reference and Implementation Netlist. Enabled by default
+   -ref:  Apply to Reference Netlist
+   -imp:  Apply to Implementation Netlist
+ 
+<b>Examples:</b>
+
+#1. Ignore output ports matching *scan_out* in ECO
+set_top('design_top');
+set_ignore_output('*scan_out*');
+set_pin_constant('scan_en', 0);
+fix_design();
+
+#2. Ignore output ports matching *TSTCON* in Implementation Netlist
+set_top('CHIP_TOP');
+set_ignore_output('*TSTCON*', '-imp');
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_ignore_pin.txt b/src_en/api.set_ignore_pin.txt
new file mode 100644
index 0000000000000000000000000000000000000000..69d28991d3c0b5158c1c2dfc26ed3ecc8bcedc9b
--- /dev/null
+++ b/src_en/api.set_ignore_pin.txt
@@ -0,0 +1,10 @@
+<h3 id='___set_ignore_pin'>set_ignore_pin</h3>
+<pre>set ignore on the pin of black box like memory in logic equivalence checking (LLM: ignore black box pin)
+<b>Usage:</b> set_ignore_pin("$cell_name/$pin_name");
+$cell_name: The black box cell name (Not instance name)
+$pin_name: The cell pin name, wildcard is supported, for example "TM*" to match TM[0] TM[1] ...
+
+<b>Examples:</b>
+set_ignore_pin("TSMC_MEM_256X29/TCEN");
+set_ignore_pin("TSMC_MEM_256X29/TA*");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_inc_dirs.txt b/src_en/api.set_inc_dirs.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ce2cc484119d61e1a27bfc07d64fe939520e55f2
--- /dev/null
+++ b/src_en/api.set_inc_dirs.txt
@@ -0,0 +1,20 @@
+<h3 id='___set_inc_dirs'>set_inc_dirs</h3>
+<pre>Set include directories
+<b>Usage:</b> set_inc_dirs(@include_directory_list, @options);
+@options:
+    -imp: The include directories are for Implementation only
+    -ref: The include directories are for Reference only
+@include_directory_list: List of all include directories
+
+<b>Examples:</b>
+
+#1. Set include directories for Reference only
+set_inc_dirs("/project/nd900/vlib/include", "/project/nd900/IPS/include", "-ref");
+
+#2. Set include directories for Implementation only
+set_inc_dirs("/project/nd900/vlib/include", "/project/nd900/IPS/include", "-imp");
+
+#3. Set include directories for both
+set_inc_dirs("/project/nd900/vlib/include", "/project/nd900/IPS/include");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_initial_trans.txt b/src_en/api.set_initial_trans.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c7df57a306069bf3cca2d335128444ad6ef798f2
--- /dev/null
+++ b/src_en/api.set_initial_trans.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_initial_trans'>set_initial_trans</h3>
+<pre>Timing command. Set initial transition for clock
+<b>Usage:</b> set_initial_trans($value);
+$value: Transition value
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_input_delay.txt b/src_en/api.set_input_delay.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ccf3835bb904521b4c75dfa2e834401a44355c84
--- /dev/null
+++ b/src_en/api.set_input_delay.txt
@@ -0,0 +1,14 @@
+<h3 id='___set_input_delay'>set_input_delay</h3>
+<pre>Timing command. Set input delay
+<b>Usage:</b> set_input_delay($port_name, $delay_value, @options);
+@options:
+    -clock clock_name: Specifies the clock that relates to the delay
+$port_name: Input port name, accept wild card '*'
+$delay_value: Delay value in ns
+
+<b>Examples:</b>
+
+#1. Set input port to all APB bus input
+set_input_delay("port_apb_*"", 0.1);
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_input_transition.txt b/src_en/api.set_input_transition.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c5e17383fb3f8a8734c7143bee4704078f374b71
--- /dev/null
+++ b/src_en/api.set_input_transition.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_input_transition'>set_input_transition</h3>
+<pre>Timing command. Set input transition to all input ports
+<b>Usage:</b> set_input_transition($value);
+$value: Transition value
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_inside_mod.txt b/src_en/api.set_inside_mod.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d87b743c1180f341d9fc9b5c0bfac7f9ca5a26e7
--- /dev/null
+++ b/src_en/api.set_inside_mod.txt
@@ -0,0 +1,7 @@
+<h3 id='___set_inside_mod'>set_inside_mod</h3>
+<pre>Set fix scope inside the current module
+If set to 1, the tool only use resource inside the current module to fix the non-eq points.
+By default, it is disabled.
+<b>Usage:</b> set_inside_mod($val);
+$val: 0, disable 1, enable
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_inst.txt b/src_en/api.set_inst.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c1ca021f6293d0522e32785c31f6cf19d75a11ff
--- /dev/null
+++ b/src_en/api.set_inst.txt
@@ -0,0 +1,8 @@
+<h3 id='___set_inst'>set_inst</h3>
+<pre>Set the current instance, alias of 'current_instance'
+<b>Usage:</b> set_inst($instance);
+$instance: Set $instance as the current instance.
+         If the argument is missing, return the current setting
+         ".." set to parent, "~" set to the most top level module 
+<b>Note:</b> It can be reset to the root top module by 'undo_eco'. It has same effect of 'set_top' and 'current_design'
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_inv.txt b/src_en/api.set_inv.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5aa3eb72a7b6f71bebd6ccca3e46a0ec78e6ed0e
--- /dev/null
+++ b/src_en/api.set_inv.txt
@@ -0,0 +1,16 @@
+<h3 id='___set_inv'>set_inv</h3>
+<pre>ECO setting. Set two points to be inverted in the Reference and Implementation Netlists
+             The points can be input port, flop instance or black-box's output pin.
+             The point names should have 'i:' or 'r:' as prefix to indicate they are for Reference or Implementation, or
+             the first point is assumed as Reference and the second Implementation.
+             Both of the points can be from Reference or Implementation by using 'i:' or 'r:' on both point names.
+<b>Usage:</b> set_inv($ref_point, $imp_point);
+$ref_point: The point in the Reference Netlist. It should be the first argument if it doesn't have 'i:' or 'r:' as prefix
+$imp_point: The point in the Implementation Netlist. It should be the second argument if it doesn't have 'i:' or 'r:' as prefix
+
+<b>Examples:</b>
+
+#1. Input port 'in_a' in the Reference Netlist is inverted to input port 'in_a_BAR' in the Implementation Netlist in top module
+set_top('top_module');
+set_inv('r:in_a', 'i:in_a_BAR');
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_invert.txt b/src_en/api.set_invert.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9df6ff9d1ee5309171d01b20f088602be9f05bb9
--- /dev/null
+++ b/src_en/api.set_invert.txt
@@ -0,0 +1,9 @@
+<h3 id='___set_invert'>set_invert</h3>
+<pre>Set invert type. The tool automatically picks one if the command is not called (LLM: invert name)
+<b>Usage:</b> set_invert($invert);
+$invert: Lib cell name for invert
+
+<b>Examples:</b>
+
+set_invert("INVX2");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_keep_format.txt b/src_en/api.set_keep_format.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a114a3e9877bf88f68e0e033a5a3e02df06fe595
--- /dev/null
+++ b/src_en/api.set_keep_format.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_keep_format'>set_keep_format</h3>
+<pre>Keep the format of the original verilog when ECO is done (Keep original netlist format)
+<b>Usage:</b> set_keep_format($value);
+$value: 0, disable format keeping (default)
+        1, enable format keeping.
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_keep_tree.txt b/src_en/api.set_keep_tree.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0fb6e041bd9814a3a8a1921ca58acdecb7ee8103
--- /dev/null
+++ b/src_en/api.set_keep_tree.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_keep_tree'>set_keep_tree</h3>
+<pre>Set keeping buffer tree, so that buffer tree won't be removed in ECO
+By default , it is disabled.
+<b>Usage:</b> set_keep_tree($val);
+$val: 0, disable 1, enable
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_keypoints_rep_in_ref.txt b/src_en/api.set_keypoints_rep_in_ref.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c8ee07dcd6d96c6a4d1c7a372460d1b8ce60c85c
--- /dev/null
+++ b/src_en/api.set_keypoints_rep_in_ref.txt
@@ -0,0 +1,18 @@
+<h3 id='___set_keypoints_rep_in_ref'>set_keypoints_rep_in_ref</h3>
+<pre>ECO setting. Replace keypoints naming in Reference Netlist.
+Keypoints naming matching the first argument, and replace the matched string by the second argument
+<b>Usage:</b> set_keypoints_rep_in_ref($match_string, $rep_string);
+$match_string: Keypoints naming matching this string
+$rep_string: To replace the matched string by this string
+
+<b>Note:</b> The command only apply to Reference Netlist
+
+<b>Examples:</b>
+
+#1. Replace the last '_' in Keypoints naming in Reference Netlist
+set_keypoints_rep_in_ref('_$', '');
+
+#2. Replace the last '0' in Keypoints naming in Reference Netlist
+set_keypoints_rep_in_ref('0$', '');
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_leaf.txt b/src_en/api.set_leaf.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2bb20f226f85fdf94b7f1cc0ca0e910351f03660
--- /dev/null
+++ b/src_en/api.set_leaf.txt
@@ -0,0 +1,14 @@
+<h3 id='___set_leaf'>set_leaf</h3>
+<pre>Set a hierarchical module to be leaf. Useful to stub hierarchical instances
+<b>Usage:</b> set_leaf($module_name, $value);
+$module_name: The module to be set leaf or not set to leaf
+$value: 1 or larger than 1, set the module as leaf. 0 not set to leaf. 
+        If $value is not present, the default value is 1.
+
+<b>Examples:</b>
+
+set_leaf($module_a); # set $module_a as a leaf
+set_leaf($module_a, 1); # same as the above
+set_leaf($module_a, 0); # remove the leaf setting
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_log_file.txt b/src_en/api.set_log_file.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fd44ce1b3403813887718b2ccddcef3b43d21858
--- /dev/null
+++ b/src_en/api.set_log_file.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_log_file'>set_log_file</h3>
+<pre>Set log file name
+<b>Usage:</b> set_log_file($filename);
+$filename: Log file name
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_low_effort.txt b/src_en/api.set_low_effort.txt
new file mode 100644
index 0000000000000000000000000000000000000000..48113cd78be5df64e55a311e55f19d6c150363c1
--- /dev/null
+++ b/src_en/api.set_low_effort.txt
@@ -0,0 +1,11 @@
+<h3 id='___set_low_effort'>set_low_effort</h3>
+<pre>Set low ECO effort to speed up ECO process (LLM: speed up)
+<b>Usage:</b> set_low_effort(@options);
+@options:
+    -help: Print this information
+
+<b>Examples:</b>
+
+#1. Set ECO low effort on all modules under ECO
+set_low_effort();
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_mapped_point.txt b/src_en/api.set_mapped_point.txt
new file mode 100644
index 0000000000000000000000000000000000000000..727e71ba8ebc1ff21a0f5173dc1f92486bf6c84f
--- /dev/null
+++ b/src_en/api.set_mapped_point.txt
@@ -0,0 +1,14 @@
+<h3 id='___set_mapped_point'>set_mapped_point</h3>
+<pre>ECO setting. Set two points mapped in Reference and Implementation Netlists
+<b>Usage:</b> set_mapped_point($ref_point, $imp_point, @options);
+$ref_point: Register instance or output port in Reference Netlist
+$imp_point: Register instance or output port in Implementation Netlist
+@options:
+    -invert: The two points are expected to be inverted
+
+<b>Examples:</b>
+
+#1. Two outputs are mapped key points
+set_mapped_point("ref_sync", "imp_sync");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_mapping_method.txt b/src_en/api.set_mapping_method.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3976f463ea32e3c8062d485600bf9bfc9003bda5
--- /dev/null
+++ b/src_en/api.set_mapping_method.txt
@@ -0,0 +1,4 @@
+<h3 id='___set_mapping_method'>set_mapping_method</h3>
+<pre>LEC setting. Detecting flop phase inversion.
+<b>Usage:</b> set_mapping_method("-phase");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_max_lines.txt b/src_en/api.set_max_lines.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1b81735ae61e0ac756197ffa8261bf8917a32b3f
--- /dev/null
+++ b/src_en/api.set_max_lines.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_max_lines'>set_max_lines</h3>
+<pre>Set max output lines
+<b>Usage:</b> set_max_lines($num);
+$num: New max lines number. Default to be 500
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_max_loop.txt b/src_en/api.set_max_loop.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ab4749cfcb445d93a9b357ee9239ca796e490e92
--- /dev/null
+++ b/src_en/api.set_max_loop.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_max_loop'>set_max_loop</h3>
+<pre>Setup max loop, the tool stops logic optimization when max loop number is reached
+<b>Usage:</b> set_max_loop($value);
+
+$value: Setup BDD threshold, default 40000
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_mod2mod.txt b/src_en/api.set_mod2mod.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c00cb2bd3a7dcd74d56421d6eb21a386597983ed
--- /dev/null
+++ b/src_en/api.set_mod2mod.txt
@@ -0,0 +1,9 @@
+<h3 id='___set_mod2mod'>set_mod2mod</h3>
+<pre>Set reference module mapping to implementation module
+<b>Usage:</b> set_mod2mod($refmod, $impmod);
+$refmod: The reference module name
+$impmod: The implementation module name
+<b>Note:</b> 
+  The command is used when reference netlist is partial
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_mu.txt b/src_en/api.set_mu.txt
new file mode 100644
index 0000000000000000000000000000000000000000..32b8549a8830507587f86930fefef4ed32584d9f
--- /dev/null
+++ b/src_en/api.set_mu.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_mu'>set_mu</h3>
+<pre>MU configuration, setup MU value for BDD threshold
+<b>Usage:</b> set_mu($value);
+$value: Setup BDD threshold, default 12000
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_multibit_blasting.txt b/src_en/api.set_multibit_blasting.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e6a97b492da539f660bf96edb3e88552e54db93e
--- /dev/null
+++ b/src_en/api.set_multibit_blasting.txt
@@ -0,0 +1,13 @@
+<h3 id='___set_multibit_blasting'>set_multibit_blasting</h3>
+<pre>Set blasting on multibit flops 
+set_multibit_blasting($enable);
+$enable: 0, disable multibit flop blasting
+         1, enable multibit flop blasting (default)
+<b>Note:</b> This command should run before read_design
+
+<b>Examples:</b>
+
+set_multibit_blasting(1);
+read_design("-ref", "ref.v");
+read_design("-imp", "imp.v");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_multibit_output.txt b/src_en/api.set_multibit_output.txt
new file mode 100644
index 0000000000000000000000000000000000000000..dc8036180bc555481e79f7b699b0eaacbf5278ce
--- /dev/null
+++ b/src_en/api.set_multibit_output.txt
@@ -0,0 +1,11 @@
+<h3 id='___set_multibit_output'>set_multibit_output</h3>
+<pre>Set multibit flops output in ECO results 
+set_multibit_output($enable);
+$enable: 0, disable multibit flops output (default)
+         1, enable multibit flops output 
+
+<b>Examples:</b>
+
+set_multibit_output(1);
+write_verilog("eco_result.v");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_net_constant.txt b/src_en/api.set_net_constant.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3398dedbb8f9210705d93824f058869ea8e4183b
--- /dev/null
+++ b/src_en/api.set_net_constant.txt
@@ -0,0 +1,20 @@
+<h3 id='___set_net_constant'>set_net_constant</h3>
+<pre>Set net to a constant value in DFT constraint (LLM: constant)
+<b>Usage:</b> set_net_constant($net, $value, @options);
+$net: Net name. It can be a bus.
+$value: Decimal value that the pin should be set
+@options:
+    -help: Print this information
+    -both: Set the net to the constant value on both Implementation and Reference. Enabled by default.
+    -imp:  Set the net to the constant only on Implementation
+    -ref:  Set the net to the constant only on Reference
+
+<b>Examples:</b>
+
+#1. Set all_test net to zero in Implementation Netlist
+set_top('DESIGN_TOP_DFT_WRAPPER');
+set_net_constant('all_test', 0, '-imp');
+set_ignore_output('PIN_EDT_CHANNEL_OUT*', '-imp');
+fix_design();
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_no_patch_opt.txt b/src_en/api.set_no_patch_opt.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ca0914e87b2861f58f72d8e3769bcfa52e184d85
--- /dev/null
+++ b/src_en/api.set_no_patch_opt.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_no_patch_opt'>set_no_patch_opt</h3>
+<pre>Disable patch optimization
+<b>Usage:</b> set_no_patch_opt($value);
+$value: 0, Enable patch optimization in fix_design (default).
+        1, Disable patch optimization in fix_design 
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_noexact_pin_match.txt b/src_en/api.set_noexact_pin_match.txt
new file mode 100644
index 0000000000000000000000000000000000000000..86e9884c2fe978e8e554fde5e15c680738544ce2
--- /dev/null
+++ b/src_en/api.set_noexact_pin_match.txt
@@ -0,0 +1,14 @@
+<h3 id='___set_noexact_pin_match'>set_noexact_pin_match</h3>
+<pre>ECO setting. Don't match some special pins
+These pins normally don't exist in RTL but added by Synthesis, DFT or other tools.
+<b>Usage:</b> set_noexact_pin_match($pattern);
+$pattern: Pin pattern in regular expression, '\bIN\d+\b'
+
+<b>Note:</b> The command only apply to Reference Netlist. It should be run before reading reference netlist
+
+<b>Examples:</b>
+
+#1. Don't match pins like IN0, IN1, IN2
+set_noexact_pin_match('\bIN\d+\b');
+read_design('-ref', 'ref_netlist.v');
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_observe_points.txt b/src_en/api.set_observe_points.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c09d6e41ce003668f2c98d24dc284d5a40ec2621
--- /dev/null
+++ b/src_en/api.set_observe_points.txt
@@ -0,0 +1,20 @@
+<h3 id='___set_observe_points'>set_observe_points</h3>
+<pre>set observe points
+<b>Usage:</b> set_observe_points(@points, @options);
+@points: Observation points 
+@options:
+   -help: Print this info
+   -comb: The points are input pins of combinational gates
+
+<b>Note:</b> The command can be run multiple times
+
+<b>Examples:</b>
+
+#1. Set data_out_ml bus as observe points
+set_observe_points("data_out_ml*");
+
+#2. Set data_out_ml bus and u_cpu/valid_status_regas observe points
+set_observe_points("data_out_ml*");
+set_observe_points("u_cpu/valid_status_reg");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_one_fault.txt b/src_en/api.set_one_fault.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6db258a9127a5d54dfcc0829496f7605102a1dc9
--- /dev/null
+++ b/src_en/api.set_one_fault.txt
@@ -0,0 +1,11 @@
+<h3 id='___set_one_fault'>set_one_fault</h3>
+<pre>Set one fault for verify_state command
+<b>Usage:</b> set_one_fault($fault_name);
+$fault_name: Fault name 
+
+<b>Examples:</b>
+
+#1. Set stuck-at 0 fault to a NAND gate input 
+set_one_fault("u_top/u_ctrl/U123/A:SA0");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_only_use.txt b/src_en/api.set_only_use.txt
new file mode 100644
index 0000000000000000000000000000000000000000..315dc37b38207528dc2f9b5b8e990714cf10d33e
--- /dev/null
+++ b/src_en/api.set_only_use.txt
@@ -0,0 +1,14 @@
+<h3 id='___set_only_use'>set_only_use</h3>
+<pre>In optimize_patch, Only use these cells listed 
+<b>Usage:</b> set_only_use(@cell_list);
+@cell_list: List of the cells that are used in optimize_patch. Wild card '*' is supported
+
+<b>Examples:</b>
+
+#1. Use these two cells
+set_only_use("INVX30","AND2X24");
+
+#2. Use any type of invert and nand gate
+set_only_use("INV*", "NAND*");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_output_delay.txt b/src_en/api.set_output_delay.txt
new file mode 100644
index 0000000000000000000000000000000000000000..166c7ab6c891d1300725bea1a690736f304acb70
--- /dev/null
+++ b/src_en/api.set_output_delay.txt
@@ -0,0 +1,14 @@
+<h3 id='___set_output_delay'>set_output_delay</h3>
+<pre>Timing command. Set output delay
+<b>Usage:</b> set_output_delay($port_name, $delay_value, @options);
+@options:
+    -clock clock_name: Specifies the clock that relates to the delay
+$port_name: Output port name, accept wild card '*'
+$delay_value: Delay value in ns
+
+<b>Examples:</b>
+
+#1. Set output delay to all memory output
+set_output_delay("mem_out_*"", 2.1);
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_output_load.txt b/src_en/api.set_output_load.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a35f3ac0fbab74bec4e19fbe355c59dab3dab7be
--- /dev/null
+++ b/src_en/api.set_output_load.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_output_load'>set_output_load</h3>
+<pre>Timing command. Set output load to all output ports
+<b>Usage:</b> set_output_load($value);
+$value: Output load value
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_phase_adjust_en.txt b/src_en/api.set_phase_adjust_en.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9cbd4a2a7ab29c94c0de94abe8ad9c3e502e0e3c
--- /dev/null
+++ b/src_en/api.set_phase_adjust_en.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_phase_adjust_en'>set_phase_adjust_en</h3>
+<pre>Enable phase adjusting (LLM: phase adjusting)
+<b>Usage:</b> set_phase_adjust_en($val);
+$val: 0, disable phase adjusting
+      1, enable phase adjusting (default)
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_phase_inv.txt b/src_en/api.set_phase_inv.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2778c891c9744879f04e7e43826e652dfe612da0
--- /dev/null
+++ b/src_en/api.set_phase_inv.txt
@@ -0,0 +1,15 @@
+<h3 id='___set_phase_inv'>set_phase_inv</h3>
+<pre>ECO setting. Set flops invert phase in the Reference and Implementation Netlists
+<b>Usage:</b> set_phase_inv($flop1, $flop2 ...);
+$flop1, $flop2: Flop instance list in full path
+
+<b>Examples:</b>
+
+#1. Set flop instance u_ip/u_control/a_reg to have invert phase
+set_top('top_module');
+set_phase_inv('u_ip/u_control/a_reg');
+
+#2. Set flop instances u_ip/u_control/a_reg and u_ip/u_control_b/b_reg to have invert phase
+set_top('top_module');
+set_phase_inv('u_ip/u_control/a_reg', 'u_ip/u_control_b/b_reg');
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_physical_aware.txt b/src_en/api.set_physical_aware.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3e8ab011189445fb2e987d1ed2c494bbb9b3bd3b
--- /dev/null
+++ b/src_en/api.set_physical_aware.txt
@@ -0,0 +1,7 @@
+<h3 id='___set_physical_aware'>set_physical_aware</h3>
+<pre>Enable physical aware ECO 
+<b>Usage:</b> set_physical_aware($value);
+$value: 0, disable physical aware ECO 
+        1, enable physical aware ECO (default)
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_pin_constant.txt b/src_en/api.set_pin_constant.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7cfa9df10d11e4f38a42b4d01fd8c6abc00ee6c3
--- /dev/null
+++ b/src_en/api.set_pin_constant.txt
@@ -0,0 +1,25 @@
+<h3 id='___set_pin_constant'>set_pin_constant</h3>
+<pre>Set pin to a constant value in DFT constraint (LLM: constant)
+<b>Usage:</b> set_pin_constant($pin, $value, @options);
+$pin: Input pin name. It can be a bus, or an instance pin.
+$value: Decimal value that the pin should be set
+@options:
+    -help: Print this information
+    -both: Set the pin to the constant value on both Implementation and Reference. Enabled by default.
+    -imp:  Set the pin to the constant only on Implementation
+    -ref:  Set the pin to the constant only on Reference
+
+<b>Examples:</b>
+
+#1. Set test scan test pin to zero
+set_top('DESING_TOP');
+set_pin_constant('PIN_SCAN_TEST', 0);
+set_ignore_output('PIN_SCAN_SO*');
+fix_design();
+
+#2. Set one bus port to all ones on Implementation
+set_top('DESING_TOP');
+set_pin_constant('PIN_CONTROL[3:0]', 15, '-imp');
+fix_design();
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_power.txt b/src_en/api.set_power.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1a99a1f3e0a47c2b178f36463124e74eeb66859c
--- /dev/null
+++ b/src_en/api.set_power.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_power'>set_power</h3>
+<pre>Set power pins connections for leaf cell
+<b>Usage:</b> set_power($leaf_cell, $connections);
+$leaf_cell: Leaf cell name. Like NAND2X4
+$connections: Power pins connections, like ".GND(GND),.VDD(VDD)"
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_preserve.txt b/src_en/api.set_preserve.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8ec8c82f7e209a8c048eddbe3d9f4213aa0c2d30
--- /dev/null
+++ b/src_en/api.set_preserve.txt
@@ -0,0 +1,23 @@
+<h3 id='___set_preserve'>set_preserve</h3>
+<pre>Set preserve property on instances. The tool does not remove them in ECO (LLM: preserve)
+<b>Usage:</b> set_preserve(@instances, @options);
+@options:
+   -hier: Set preserve globally, the specified instances will be preserved in all modules
+@instances: Instances to be preserved in the current module
+            Accept wild card '*'
+
+<b>Examples:</b>
+
+#1. Preserver two instances in mcu_top 
+push_top("mcu_top");
+set_preserve("u_donttouch0", "u_1000");
+pop_top;
+
+#2. Preserve all DONT* instances in abc_mod
+push_top("abc_mod");
+set_preserve("DONT*");
+pop_top;
+
+#3. Preserve clock_tree_* instance in all modules, push_top/set_top are ignored
+set_preserve("clock_tree_*", "-hier");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_quiet.txt b/src_en/api.set_quiet.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c0aa06942bff2809871b0ffff9485e12d4074748
--- /dev/null
+++ b/src_en/api.set_quiet.txt
@@ -0,0 +1,4 @@
+<h3 id='___set_quiet'>set_quiet</h3>
+<pre>Run script in quiet mode
+<b>Usage:</b> set_quiet;
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_recovery_distance.txt b/src_en/api.set_recovery_distance.txt
new file mode 100644
index 0000000000000000000000000000000000000000..afcc0c7f1bd7b3e5ee2d89dc0a24b1c30c26512b
--- /dev/null
+++ b/src_en/api.set_recovery_distance.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_recovery_distance'>set_recovery_distance</h3>
+<pre>Set distance limit for gates recovery in ECO
+<b>Usage:</b> set_recovery_distance($distance);
+$distance: Distance to recover deleted gate, in unit of 'um'
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_remove_undsc_in_ref.txt b/src_en/api.set_remove_undsc_in_ref.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7c2608209fe99d99fc04b41e8c69b2d6646dd1df
--- /dev/null
+++ b/src_en/api.set_remove_undsc_in_ref.txt
@@ -0,0 +1,9 @@
+<h3 id='___set_remove_undsc_in_ref'>set_remove_undsc_in_ref</h3>
+<pre>ECO setting. Remove last '_' in flop instance in Reference Netlist
+It's a special command to remove the last '_' in flop instance in Reference Netlist 
+   to match Implementation Netlist.
+<b>Usage:</b> set_remove_undsc_in_ref($value);
+$value: 1, enable. 0, disable
+
+<b>Note:</b> The command only apply to Reference Netlist
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_rtl_eco_full_hier_fan.txt b/src_en/api.set_rtl_eco_full_hier_fan.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7b0adf795cfc0cfd2d022fbbe6ca92ca961aa4a9
--- /dev/null
+++ b/src_en/api.set_rtl_eco_full_hier_fan.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_rtl_eco_full_hier_fan'>set_rtl_eco_full_hier_fan</h3>
+<pre>RTL ECO has full hierarchical fanout
+<b>Usage:</b> set_rtl_eco_full_hier_fan($val);
+$value: 0, disable full hierarchical fanout (default)
+        1, enable full hierarchical fanout
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_save_mapped_instance.txt b/src_en/api.set_save_mapped_instance.txt
new file mode 100644
index 0000000000000000000000000000000000000000..91a67e8e995c3c632532ef6589f8fc8e9b411616
--- /dev/null
+++ b/src_en/api.set_save_mapped_instance.txt
@@ -0,0 +1,12 @@
+<h3 id='___set_save_mapped_instance'>set_save_mapped_instance</h3>
+<pre>Dump key points mapping information for LEC
+<b>Usage:</b> set_save_mapped_instance(1);
+
+<b>Note:</b> The command should be run before fix_design
+
+Example:
+
+set_save_mapped_instance(1);
+fix_design();
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_scan_pairs.txt b/src_en/api.set_scan_pairs.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0a49350d0bc8e3963a29a4237de2ea0660e0eafa
--- /dev/null
+++ b/src_en/api.set_scan_pairs.txt
@@ -0,0 +1,21 @@
+<h3 id='___set_scan_pairs'>set_scan_pairs</h3>
+<pre>Set scan output ports, the command is used with dft_drc
+<b>Usage:</b> set_scan_pairs(@scan_in_out_pairs);
+@scan_in_out_pairs: List of pairs of scan in and scan out pins
+
+<b>Note:</b> The command can run multiple times
+
+<b>Examples:</b>
+
+#1. Set all scan_si[100:0] scan_so[100:0] as scan in/out ports
+set_top("THE_DESIGN");
+for(my $i=0;$i<=100;$i++){
+  set_scan_pairs("scan_si[$i]", "scan_so[$i]");
+}
+set_top("THE_DFT_TOP"); # THE_DFT_TOP has THE_DESIGN as an instance
+dft_drc;
+
+#2. Check DFT DRC on a_scan_si[6]/a_scan_so[6] and b_scan_in[7]/b_scan_out[7]
+set_scan_pairs("a_scan_si[6]", "a_scan_so[6]", "b_scan_in[7]", "b_scan_out[7]");
+dft_drc;
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_sn_vs_rn.txt b/src_en/api.set_sn_vs_rn.txt
new file mode 100644
index 0000000000000000000000000000000000000000..84b792f7aa8dfe1892cb11691b8324841a41c055
--- /dev/null
+++ b/src_en/api.set_sn_vs_rn.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_sn_vs_rn'>set_sn_vs_rn</h3>
+<pre>Check set pin and reset pin priority
+<b>Usage:</b> set_sn_vs_rn($val);
+$val: 1, Check set/reset pins priority, default
+      0, Don't check set/reset pins priority
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_solver_timeout.txt b/src_en/api.set_solver_timeout.txt
new file mode 100644
index 0000000000000000000000000000000000000000..17990d77a3b6b175d13bb1583c1d34fa5a4c9bf0
--- /dev/null
+++ b/src_en/api.set_solver_timeout.txt
@@ -0,0 +1,11 @@
+<h3 id='___set_solver_timeout'>set_solver_timeout</h3>
+<pre>Set time out for solver
+<b>Usage:</b> set_solver_timeout($time_in_seconds);
+$time_in_seconds: An integer number in seconds
+
+<b>Examples:</b>
+
+#1. Set solver time out to ~10 hours
+set_solver_timeout(36000);
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_tiehi_net.txt b/src_en/api.set_tiehi_net.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a0dd3f1b9d6e0ad8cd3918647d56c9c6444b732c
--- /dev/null
+++ b/src_en/api.set_tiehi_net.txt
@@ -0,0 +1,8 @@
+<h3 id='___set_tiehi_net'>set_tiehi_net</h3>
+<pre>Set tiehi net name, it is used if tiehi net is needed in ECO (LLM: tiehi)
+<b>Usage:</b> set_tiehi_net($netname);
+$netname: Tiehi net name, default to be 1'b1
+
+<b>Note:</b> If Tie High Cell is preferred, the value should be set to empty
+      set_tiehi_net("");
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_tielo_net.txt b/src_en/api.set_tielo_net.txt
new file mode 100644
index 0000000000000000000000000000000000000000..349bed3ad4c107bb113243a83a02a38e95b76d88
--- /dev/null
+++ b/src_en/api.set_tielo_net.txt
@@ -0,0 +1,15 @@
+<h3 id='___set_tielo_net'>set_tielo_net</h3>
+<pre>Set tielo net name, it is used if tielo net is needed in ECO (LLM: tielo)
+<b>Usage:</b> set_tielo_net($netname);
+$netname: Tielo net name, default to be 1'b0
+
+<b>Note:</b> If Tie Low Cell is preferred, the value should be set to empty
+      set_tielo_net("");
+
+<b>Examples:</b>
+
+set_tielo_net("___logic0___"); 
+set_tielo_net("TIE_HILO_TIELO_NET");
+set_tielo_net(""); # Use Tie Cell
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_time_frame_limit.txt b/src_en/api.set_time_frame_limit.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cbd99aa5c9f27d33208ca9c85e5b254e18b86930
--- /dev/null
+++ b/src_en/api.set_time_frame_limit.txt
@@ -0,0 +1,11 @@
+<h3 id='___set_time_frame_limit'>set_time_frame_limit</h3>
+<pre>GOF Formal only. Set limitation for time frame in fault verification, default 35
+<b>Usage:</b> set_time_frame_limit($frame_number);
+$frame_number: An integer number
+
+<b>Examples:</b>
+
+#1. Set time frame limit to 256
+set_time_frame_limit(256);
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_top.txt b/src_en/api.set_top.txt
new file mode 100644
index 0000000000000000000000000000000000000000..539870fcd0be49bd4d81c98641b9fc48b46ab475
--- /dev/null
+++ b/src_en/api.set_top.txt
@@ -0,0 +1,8 @@
+<h3 id='___set_top'>set_top</h3>
+<pre>Set the current top level module (LLM: current top design)
+<b>Usage:</b> set_top($module);
+$module: Set $module as the current top level module.
+         If the argument is missing, return the current setting
+         ".." set to the parent module, "~" set to the most top level module 
+<b>Note:</b> It can be reset to the root top module by 'undo_eco'
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_top_ref.txt b/src_en/api.set_top_ref.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f4d5165740412db5d8c2b95d93ec80a8c3fe33aa
--- /dev/null
+++ b/src_en/api.set_top_ref.txt
@@ -0,0 +1,6 @@
+<h3 id='___set_top_ref'>set_top_ref</h3>
+<pre>Set the top level module for the Reference design (LLM: unmatched hierarchy reference)
+Usage set_top_ref($module);
+Notes:
+Set top module for the Reference Netlist due to unmatched hierarchy. 
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_tree.txt b/src_en/api.set_tree.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1fdf43568fc538ad49cdfb07826458d5f4ef4dbe
--- /dev/null
+++ b/src_en/api.set_tree.txt
@@ -0,0 +1,19 @@
+<h3 id='___set_tree'>set_tree</h3>
+<pre>Set the current tree, if there are more than one sets of databases (LLM: tree)
+<b>Usage:</b> set_tree($tree);
+$tree: It can be Top, Top_ref, Top_1 or Top_2
+       Top: The Implementation Netlist
+       Top_ref: The Reference Netlist
+       Top_1: The netlist loaded by -Top_1 option
+       Top_2: The netlist loaded by -Top_2 option
+       If $tree is not defined, the current database name is returned
+
+<b>Note:</b> Implementation tree 'Top' has aliases of 'imp', 'IMP'
+      Reference tree 'Top_ref' has aliases of 'ref', 'REF'
+
+<b>Examples:</b>
+
+set_tree("Top"); # Set to the Implementation Netlist tree
+set_tree("Top_ref"); # Set to the Reference Netlist tree
+set_tree();  # Return the current database name. E.G. 'Top_ref'
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_user_match.txt b/src_en/api.set_user_match.txt
new file mode 100644
index 0000000000000000000000000000000000000000..477b2d0898109d2fd98bf9542848e6473371e6fd
--- /dev/null
+++ b/src_en/api.set_user_match.txt
@@ -0,0 +1,16 @@
+<h3 id='___set_user_match'>set_user_match</h3>
+<pre>Set match between multi-bit flops to multi-bit flops, and between multi-bit flops to single bit flop
+<b>Usage:</b> set_user_match($inst1, $inst2);
+$inst1: The first flop instance, in the format of 'r:reg_1_0A/\*dff.00.0\*' if it is multibit 
+           or 'r:reg_1A' if it is single bit
+$inst2: The second flop instance, in the format of 'i:reg_1_0A/\*dff.00.0\*' if it is multibit 
+           or 'i:reg_1A' if it is single bit
+
+<b>Examples:</b>
+
+set_user_match('r:reg_1_0A/\*dff.00.0\*', 'i:reg_0A');
+set_user_match('r:reg_1_0A/\*dff.00.1\*', 'i:reg_1A');
+set_user_match('r:reg_2_1A/\*dff.00.1\*', 'i:reg_1_0A/\*dff.00.0\*');
+
+<b>Note:</b> It is recommended to use SVF file, guide_multibit in SVF file has the same effect of this command
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_verbose.txt b/src_en/api.set_verbose.txt
new file mode 100644
index 0000000000000000000000000000000000000000..611aab1dbf724452d1140400af4c781ae19c4a89
--- /dev/null
+++ b/src_en/api.set_verbose.txt
@@ -0,0 +1,5 @@
+<h3 id='___set_verbose'>set_verbose</h3>
+<pre>Run script in verbose mode
+<b>Usage:</b> set_verbose($num);
+$num: Verbose level, higher to be more verbose
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_wireload.txt b/src_en/api.set_wireload.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1777beb91eac1a4947725b1a87ac2acd9499e347
--- /dev/null
+++ b/src_en/api.set_wireload.txt
@@ -0,0 +1,12 @@
+<h3 id='___set_wireload'>set_wireload</h3>
+<pre>Command for Timing Report. Set wireload for one liberty library
+<b>Usage:</b> set_wireload($library, $wireload);
+$library: Library name
+$wireload: Wireload name
+
+<b>Examples:</b>
+
+#1. Set wireload for one library
+set_wireload("TMC18VGB15ELV16S_1P8V_25C", "zero-wire-load-model");
+
+</pre>
\ No newline at end of file
diff --git a/src_en/api.set_write_verilog_remove_backslash.txt b/src_en/api.set_write_verilog_remove_backslash.txt
new file mode 100644
index 0000000000000000000000000000000000000000..acd7b41a0506ba036b96dc339b41f379b730a954
--- /dev/null
+++ b/src_en/api.set_write_verilog_remove_backslash.txt
@@ -0,0 +1,7 @@
+<h3 id='___set_write_verilog_remove_backslash'>set_write_verilog_remove_backslash</h3>
+<pre>Enable write out verilog with backslash removal
+<b>Usage:</b> set_write_verilog_remove_backslash($value);
+$value: 0, Disable by default
+        1, Enable backslash removal in write_verilog
+
+</pre>
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diff --git a/src_en/api.set_write_verilog_uniquify.txt b/src_en/api.set_write_verilog_uniquify.txt
new file mode 100644
index 0000000000000000000000000000000000000000..29995d28634429c986624532d3e894db6b121489
--- /dev/null
+++ b/src_en/api.set_write_verilog_uniquify.txt
@@ -0,0 +1,7 @@
+<h3 id='___set_write_verilog_uniquify'>set_write_verilog_uniquify</h3>
+<pre>Enable write out verilog in uniquified mode
+<b>Usage:</b> set_write_verilog_uniquify($value);
+$value: 0, Disable by default
+        1, Enable uniquify mode
+
+</pre>
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diff --git a/src_en/api.set_xm_flop_merge_enable.txt b/src_en/api.set_xm_flop_merge_enable.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a1c84f749bf7b5bd2c123f713014bddc645ef951
--- /dev/null
+++ b/src_en/api.set_xm_flop_merge_enable.txt
@@ -0,0 +1,9 @@
+<h3 id='___set_xm_flop_merge_enable'>set_xm_flop_merge_enable</h3>
+<pre>Cross module flop mapping and merging enable. 
+<b>Usage:</b> set_xm_flop_merge_enable($setting,@options);
+$setting: 0, disable cross module flop merge (default)
+          1, enable cross module flop merge
+@options:
+   -parallel: Run merge process in parallel 
+<b>Note:</b> Flop merge inside module command set_flop_merge_enable is enabled by default
+</pre>
\ No newline at end of file