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-rw-r--r--docs/Config_Reference.md5
-rw-r--r--docs/G-Codes.md4
2 files changed, 6 insertions, 3 deletions
diff --git a/docs/Config_Reference.md b/docs/Config_Reference.md
index 4c78b550..fd77f9e3 100644
--- a/docs/Config_Reference.md
+++ b/docs/Config_Reference.md
@@ -1835,8 +1835,9 @@ more information.
```
[extruder_stepper my_extra_stepper]
#extruder: extruder
-# The extruder this stepper is synchronized to. The default is
-# "extruder".
+# The extruder this stepper is synchronized to. If this is set to an
+# empty string then the stepper will not be synchronized to an
+# extruder. The default is "extruder".
#step_pin:
#dir_pin:
#enable_pin:
diff --git a/docs/G-Codes.md b/docs/G-Codes.md
index 119f1fbb..6450f0ef 100644
--- a/docs/G-Codes.md
+++ b/docs/G-Codes.md
@@ -186,7 +186,9 @@ The following standard commands are supported:
command will cause the given extruder STEPPER (as specified in an
[extruder](Config_Reference#extruder) or
[extruder stepper](Config_Reference#extruder_stepper) config
- section) to become synchronized to the given EXTRUDER.
+ section) to become synchronized to the given EXTRUDER. If EXTRUDER
+ is an empty string then the stepper will not be synchronized to an
+ extruder.
- `SET_STEPPER_ENABLE STEPPER=<config_name> ENABLE=[0|1]`: Enable or
disable only the given stepper. This is a diagnostic and debugging
tool and must be used with care. Disabling an axis motor does not