diff --git a/docs/Instruction/images/week04/mods_feed_rate.png b/docs/Instruction/images/week04/mods_feed_rate.png
new file mode 100644
index 0000000000000000000000000000000000000000..ee53aa09236f31709a822b2d11995357bbaa45f0
Binary files /dev/null and b/docs/Instruction/images/week04/mods_feed_rate.png differ
diff --git a/docs/Instruction/tips/genmitsu_prover_xl_setup.md b/docs/Instruction/tips/genmitsu_prover_xl_setup.md
index f58e8375639f51f3f21af27a34593b06941362f5..7ac081ca215a28ecc03191280cb053e7983e4791 100644
--- a/docs/Instruction/tips/genmitsu_prover_xl_setup.md
+++ b/docs/Instruction/tips/genmitsu_prover_xl_setup.md
@@ -308,6 +308,9 @@ Click **Surfacing** (Top-Center)
!!! note
PNG's ```G04 P1``` or SVG's ```G04 P1000``` need to be **commented out** for this machine, otherwise machine will stop on this line.
+!!! attention
+ ``T1M06`` may be also need to be commented out. This happened when **wchusbserial1440** did not appear in the device list to connect. Possibly CH340 driver may not be installed successfully.
+
30x30_40x40mm_96dpi.png.nc |SVG image.nc |Meanig
- |--- |--
@@ -320,7 +323,7 @@ G54 |G54 |G54 Set Datum
G80 |G80 |G80 Cancel cycles
G90 |G90 |G90 Absolute programming
G94 |G94 |G94 Per minute feed
-T1M06 |T1M06 |T1 Tool Number, M06 Tool Change
+**T1M06** |**T1M06** |T1 Tool Number, M06 Tool Change
F150.0000 |F150.0000 |F Defines feed rate
S11000 |S11000 |S Defines speed
G00Z2.0000 |G00Z2.0000 |G00 Positioning at rapid travel Z2.0000
@@ -363,7 +366,7 @@ Ref. [G-gode](https://gcodetutor.com/cnc-machine-training/cnc-g-codes.html),
{width=300}
-Comment out ```G04 P1000```
+Comment out ```G04 P1000``` and
```
//
@@ -402,7 +405,7 @@ function make_path() {
str += "G80\n" // cancel canned cycles
str += "G90\n" // absolute coordinates
str += "G94\n" // feed/minute units
- str += "T"+tool+"M06\n" // tool selection, tool change
+ //str += "T"+tool+"M06\n" // tool selection, tool change..................comment out
str += "F"+cut_speed.toFixed(4)+"\n" // feed rate
str += "S"+spindle_speed+"\n" // spindle speed
if (mod.coolanton.checked)
diff --git a/docs/Instruction/tips/markdown_In-page_links.md b/docs/Instruction/tips/markdown_In-page_links.md
index 655ab5ac555584d727fe6179d2619ff746aa5461..b089f282cb43b96e030a1bba83019b7e15a649c1 100644
--- a/docs/Instruction/tips/markdown_In-page_links.md
+++ b/docs/Instruction/tips/markdown_In-page_links.md
@@ -43,7 +43,7 @@
#### abc_def!@#$%^&*()+|~=\`[]{};':",./<>?123-456
[go to abc_def!@#$%^&*()+|~=\`[]{};':",./<>?123-456](#abc_def123-456)
-//ignore except alphabet, number, a"_" and "-"
+//ignore except alphabet, number, "_" and "-"
```
diff --git a/docs/Instruction/week04.md b/docs/Instruction/week04.md
index 0f27f1949a300528ff2ef494044fb11b27db6fc1..387f55be16c876ae3f5748d03a77cc8c5b326cfd 100644
--- a/docs/Instruction/week04.md
+++ b/docs/Instruction/week04.md
@@ -48,6 +48,18 @@ Ref. [assesment](https://fabacademy.org/2022/nueval/3d_scanning_and_printing.htm
- the distance which the cutting tool during one spindle revolution [ipm]or[mpm]
- Ref. [Difference Between Feed Rate and Cutting Speed in CNC Machining](https://www.rapiddirect.com/blog/difference-between-feed-rate-and-cutting-speed/)
+!!! note
+ In Mods' **path to G-code** module, **cut speed (mm/s)** is used to calculate **F**(Feed rate) in G-code.
+
+ Example:
+ Mods **path to G-code** module
+ - cut speed 1(mm/s)
+ G-code .nc
+ - F60.0000(mm/min)
+
+
+
+
- characterize the design rules
- Material
- [FR1](https://www.yodobashi.com/product/100000001004769460/)