DDP|ER Regular Expressions

A regular expression is a versatile way to specify a complex string search. The topic of how to write a regular expression is beyond our scope, but good writeups are available at Wikipedia and MSDN

Some examples of regular expressions useful for include or exclude files.

Expression	Summary
.\..~	Any file name whose extension ends with ~
.\.~.	Any file name whose extension starts with ~
.*\.\d\d	Any file name with a two digit extension
.*\....	Any file name with a three letter extension.