My idea behind the layout was that users who are not acquainted with regular expressions and above all, who are not interested in getting acquainted with it, simply because they will never use it for any other purpose, or simply because it is not 'their cup of tea' so to say, those people will forget what strings to use or how to use it. In my layout, they simply need to tag items.
They cud tag [Tab] and [Carriage Return] and maybe some other symbols altogether and then run it and all this stuff would then be stripped. Oh, there should be a reset button, or ctrl-Z to 'undo' the action.
If you wish to use a webpage with regex examples, I would rrreally suggest to have an very simple example page in the F1-Help, meaning to say, if the user is on that specific CHS find and replace section and hit F1, then it short page to show up (not external, but from CHS Help)
\t = tab
\n = new line
\r = carriage return
\s = space
and an example like: remove all tabs, new lines and symbols < and > for instance: (<|\n|>|\t)