The caveat is that these words, after ^^, can be [[regular expression]]s. What that means is to use the characters '''\ . ? * + | ^ $ ( ) [ ] { }''' you need to prepend them with <code>\</code>. Otherwise they have special meanings. A period for examples means "any one character". An example: we want to remove everything after the first period: <code>span.byline-name^^^^\.</code> - here we use <code>\</code> to escape the special-character meaning of the period.
==Not escaping spaces in URLs properly?==
I've noticed that spaces in URL's often don't get escaped properly. For example:
The url field has ''q=faile mansion''. The embedded space should be escaped to a + (or maybe some %hex code).
Other than that, this is a truly awesome tool. Thanks for making it available! -- [[User:RoySmith|RoySmith]] [[User Talk:RoySmith|(talk)]] 15:54, 3 February 2018 (UTC)