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-rw-r--r--user_guide_src/source/libraries/form_validation.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst
index 2b7780ff2..69b6c688a 100644
--- a/user_guide_src/source/libraries/form_validation.rst
+++ b/user_guide_src/source/libraries/form_validation.rst
@@ -962,6 +962,7 @@ Rule Parameter Description
not numeric.
**less_than_equal_to** Yes Returns FALSE if the form element is greater than the parameter value, less_than_equal_to[8]
or not numeric.
+**in** Yes Returns FALSE if the form element is not within a predetermined list. in[red,blue,green]
**alpha** No Returns FALSE if the form element contains anything other than alphabetical characters.
**alpha_numeric** No Returns FALSE if the form element contains anything other than alpha-numeric characters.
**alpha_numeric_spaces** No Returns FALSE if the form element contains anything other than alpha-numeric characters