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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 915ce876f..65fd9acc8 100644
--- a/user_guide_src/source/libraries/form_validation.rst
+++ b/user_guide_src/source/libraries/form_validation.rst
@@ -987,6 +987,7 @@ Rule Parameter Description
**valid_emails** No Returns FALSE if any value provided in a comma separated list is not a valid email.
**valid_ip** No Returns FALSE if the supplied IP is not valid.
Accepts an optional parameter of 'ipv4' or 'ipv6' to specify an IP format.
+**valid_mac** No Returns FALSE if the supplied MAC address is not valid.
**valid_base64** No Returns FALSE if the supplied string contains anything other than valid Base64 characters.
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