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-rw-r--r--docs/G-Codes.md4
1 files changed, 3 insertions, 1 deletions
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