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-rw-r--r--docs/Config_Changes.md4
-rw-r--r--docs/G-Codes.md5
2 files changed, 7 insertions, 2 deletions
diff --git a/docs/Config_Changes.md b/docs/Config_Changes.md
index a73a0c37..adc03a08 100644
--- a/docs/Config_Changes.md
+++ b/docs/Config_Changes.md
@@ -8,6 +8,10 @@ All dates in this document are approximate.
## Changes
+20250131: Option `VARIABLE=<name>` in `SAVE_VARIABLE` requires lowercase
+value. For example, `extruder` instead of mixedcase `Extruder` or
+uppercase `EXTRUDER`. Using any uppercase letter will raise an error.
+
20241203: The resonance test has been changed to include slow sweeping
moves. This change requires that testing point(s) have some clearance
in X/Y plane (+/- 30 mm from the test point should suffice when using
diff --git a/docs/G-Codes.md b/docs/G-Codes.md
index ff6182fa..78c1c74b 100644
--- a/docs/G-Codes.md
+++ b/docs/G-Codes.md
@@ -1201,8 +1201,9 @@ has been enabled.
#### SAVE_VARIABLE
`SAVE_VARIABLE VARIABLE=<name> VALUE=<value>`: Saves the variable to
-disk so that it can be used across restarts. All stored variables are
-loaded into the `printer.save_variables.variables` dict at startup and
+disk so that it can be used across restarts. The VARIABLE must be lowercase.
+All stored variables are loaded into the
+`printer.save_variables.variables` dict at startup and
can be used in gcode macros. The provided VALUE is parsed as a Python
literal.