Options Meaning
The tested value must contain the specified value.
<^> The tested value must not contain the specified value.
. The tested value can contain any individual character represented by the period (.).
[] The tested value must contain at least one of the characters listed within the brackets.
[] The tested value must contain at least one of the characters listed within the range of values enclosed by the brackets.
^ The tested value must begin with the value preceded by the caret (^) symbol.
$ The tested value must end with the value followed by the dollar sign ($) symbol.
* The tested value must include zero or more of the character that precedes the asterisk (*).