format rule reference table
diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst
index 375bb46..e5f6824 100644
--- a/user_guide_src/source/libraries/form_validation.rst
+++ b/user_guide_src/source/libraries/form_validation.rst
@@ -838,95 +838,35 @@
The following is a list of all the native rules that are available to
use:
-Rule
-Parameter
-Description
-Example
-**required**
-No
-Returns FALSE if the form element is empty.
-**matches**
-Yes
-Returns FALSE if the form element does not match the one in the
-parameter.
-matches[form_item]
-**is_unique**
-Yes
-Returns FALSE if the form element is not unique to the table and field
-name in the parameter.
-is_unique[table.field]
-**min_length**
-Yes
-Returns FALSE if the form element is shorter then the parameter value.
-min_length[6]
-**max_length**
-Yes
-Returns FALSE if the form element is longer then the parameter value.
-max_length[12]
-**exact_length**
-Yes
-Returns FALSE if the form element is not exactly the parameter value.
-exact_length[8]
-**greater_than**
-Yes
-Returns FALSE if the form element is less than the parameter value or
-not numeric.
-greater_than[8]
-**less_than**
-Yes
-Returns FALSE if the form element is greater than the parameter value or
-not numeric.
-less_than[8]
-**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_dash**
-No
-Returns FALSE if the form element contains anything other than
-alpha-numeric characters, underscores or dashes.
-**numeric**
-No
-Returns FALSE if the form element contains anything other than numeric
-characters.
-**integer**
-No
-Returns FALSE if the form element contains anything other than an
-integer.
-**decimal**
-Yes
-Returns FALSE if the form element is not exactly the parameter value.
-**is_natural**
-No
-Returns FALSE if the form element contains anything other than a natural
-number: 0, 1, 2, 3, etc.
-**is_natural_no_zero**
-No
-Returns FALSE if the form element contains anything other than a natural
-number, but not zero: 1, 2, 3, etc.
-**is_unique**
-Yes
-Returns FALSE if the form element is not unique in a database table.
-is_unique[table.field]
-**valid_email**
-No
-Returns FALSE if the form element does not contain a valid email
-address.
-**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.
-**valid_base64**
-No
-Returns FALSE if the supplied string contains anything other than valid
-Base64 characters.
+.. table::
+======================= ========== ============================================================================================= =======================
+Rule Parameter Description Example
+======================= ========== ============================================================================================= =======================
+**required** No Returns FALSE if the form element is empty.
+**matches** Yes Returns FALSE if the form element does not match the one in the parameter. matches[form_item]
+**is_unique** Yes Returns FALSE if the form element is not unique to the is_unique[table.field]
+ table and field name in the parameter. is_unique[table.field]
+**max_length** Yes Returns FALSE if the form element is longer then the parameter value. max_length[12]
+**exact_length** Yes Returns FALSE if the form element is not exactly the parameter value. exact_length[8]
+**greater_than** Yes Returns FALSE if the form element is less than the parameter value or not numeric. greater_than[8]
+**less_than** Yes Returns FALSE if the form element is greater than the parameter value or not numeric. less_than[8]
+**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_dash** No Returns FALSE if the form element contains anything other than alpha-numeric characters,
+ underscores or dashes.
+**numeric** No Returns FALSE if the form element contains anything other than numeric characters.
+**integer** No Returns FALSE if the form element contains anything other than an integer.
+**decimal** Yes Returns FALSE if the form element is not exactly the parameter value.
+**is_natural** No Returns FALSE if the form element contains anything other than a natural number:
+ 0, 1, 2, 3, etc.
+**is_natural_no_zero** No Returns FALSE if the form element contains anything other than a natural
+ number, but not zero: 1, 2, 3, etc.
+**is_unique** Yes Returns FALSE if the form element is not unique in a database table. is_unique[table.field]
+**valid_email** No Returns FALSE if the form element does not contain a valid email address.
+**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.
+**valid_base64** No Returns FALSE if the supplied string contains anything other than valid Base64 characters.
+======================= ========== ============================================================================================= =======================
.. note:: These rules can also be called as discrete functions. For
example::