If set, and Hudson is set to poll for changes, Hudson will honor any files and/or folders 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. An empty list implies that everything is included.

       myapp/src/main/web/.*\.html
       myapp/src/main/web/.*\.jpeg
       myapp/src/main/web/.*\.gif
  

The example above illustrates that a build will only occur, if html/jpeg/gif files have been committed to the SCM. If there is an overlap between included and excluded regions, exclusions take precedence over inclusions.

More information on regular expressions can be found here.