This rule allows finding and replacing patterns defined as Regular Expressions.
Regular Expressions (RegEx) use a special syntax for describing search and replace patterns, they are very powerful and really worth learning.
ReNamer users have posted many RegEx examples at the User Forum, where you might find your particular case already solved.
The parameters are as follows:
|Expression||RegEx pattern to match or find.|
|Replace||RegEx pattern that replaces the found pattern.|
|Skip extension||If this check box is selected, the extension will be ignored by the rule.|
|Case-sensitive||If this option is selected, ReNamer will search for the text in case-sensitive manner.|
A simple set of commonly used RegEx syntax patterns is provided in the hint menu: