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-rw-r--r--docs/markdown/Reference-manual.md4
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/markdown/Reference-manual.md b/docs/markdown/Reference-manual.md
index de51479..f3640f0 100644
--- a/docs/markdown/Reference-manual.md
+++ b/docs/markdown/Reference-manual.md
@@ -1440,7 +1440,9 @@ are immutable, all operations return their results as a new string.
- `startswith(string)` returns true if string starts with the string
specified as the argument
-- `strip()` removes whitespace at the beginning and end of the string
+- `strip()` removes whitespace at the beginning and end of the string
+ *(added 0.43.0)* optionally can take one positional string argument,
+ and all characters in that string will be stripped
- `to_int` returns the string converted to an integer (error if string
is not a number)