If set, and Jenkins is set to poll for changes, Jenkins will ignore any files and/or folders that are not in this list when determining if a build needs to be triggered.

Each inclusion uses regular expression pattern matching, and must be separated by a new line.

Each pattern is matched against the entire Subversion path of the changed file (Java Matcher.matches()), not as a substring search. A relative path such as c/library1/.* will not match /trunk/myapp/c/library1/Foo.c. Write a pattern that covers the whole path, for example /trunk/myapp/c/library1/.* or .*/c/library1/.*.

This is useful when you need to check out an entire resource for building, but only want to do the build when a subset has changed.

	/trunk/myapp/c/library1/.*
	/trunk/myapp/c/library2/.*
  

If /trunk/myapp is checked out, the build will only occur when there are changes to either the c/library1 and c/library2 subtrees.

If there are also excluded regions specified, then a file is not ignored when it is in the included list and not in the excluded list.

More information on regular expressions can be found here.