diff --git a/doc/Chamber-temperature.md b/doc/Chamber-temperature.md
index d9fe37e6769..2ab9c1b7cf3 100644
--- a/doc/Chamber-temperature.md
+++ b/doc/Chamber-temperature.md
@@ -1,4 +1,18 @@
 OrcaSlicer use `M141/M191` command to control active chamber heater.  
+
+If `Activate temperature control` is checked, OrcaSlicer will insert `M191` command at the beginning of the gcode(before `Machine G-code`).  
+![image](./images/activate_chamber_heater.jpg)  
+*Note: If the machine is equipped with an auxiliary fan, OrcaSlicer will automatically activate the fan during the heating period to help circulate air in the chamber.*  
+
+
+There are two chamber temperature variables available that we can use in `Machine G-code` to control the chamber temperature, if you prefer:  
+To access the chamber temperature set in the first filament, use:  
+`M191 S{chamber_temperature[0]}`  
+To use the overall chamber temperature, which is the highest chamber temperature set across all filaments, use:    
+`M191 S{overall_chamber_temperature}`
+
+
+--------------------------Klipper--------------------------  
 If you are using Klipper, you can define these macros to control the active chamber heater.  
 Bellow is a reference configuration for Klipper.   
 *Note: Don't forget to change the pin name/values to the actual values you are using in the configuration*
diff --git a/doc/images/activate_chamber_heater.jpg b/doc/images/activate_chamber_heater.jpg
new file mode 100644
index 00000000000..c6c4f550ac7
Binary files /dev/null and b/doc/images/activate_chamber_heater.jpg differ
diff --git a/resources/profiles/Prusa/process/process_common_mk3.json b/resources/profiles/Prusa/process/process_common_mk3.json
index 2bed89d15b2..31e20be3be6 100644
--- a/resources/profiles/Prusa/process/process_common_mk3.json
+++ b/resources/profiles/Prusa/process/process_common_mk3.json
@@ -15,7 +15,7 @@
   "default_acceleration": "1000",
   "detect_overhang_wall": "1",
   "detect_thin_wall": "0",
-  "draft_shield": "0",
+  "draft_shield": "disabled",
   "enable_overhang_speed": "1",
   "enable_prime_tower": "1",
   "enable_support": "0",