. Any single character=.
* Zero or more=*
+ One or more=+
^ Beginning of line=^
$ End of line=$
[] Any one character in the set=[]
[^] Any one character not in the set=[^]
\ Escape special character=\
\n Line feed character=\n
\t Tab character=\t
-
HEX color=#[0-9a-fA-F]*
RGB color=[Rr][Gg][Bb]\([^)]*\)
Number=[\-\+]*[\.]*[0-9]+[\.]*[0-9]*
Double quoted string="[^"]*"
Single quoted string='[^']*'
HTML image tag=<img[^>]+>
HTML hyperlink=<a[^>]+>.+</a>
HTML comment=<!--[^(-->)]*-->