AccuRev’s pathname optimization facility provides for faster performance by allowing certain objects to be ignored during various commands, notably (external)-status objects during whole-workspace searches. AccuRev supports specification of objects to be ignored on a per-directory basis so that one or more directories in a workspace can contain a text file named .acignore.
If you right-click on selected files that you want to ignore and choose from the context menu, AccuRev creates an .acignore file in that directory configured with the files you selected. If a .acignore file already exists in that directory, the AccuRev Plug-In for IntelliJ IDEA updates it with the names of the files.
An .acignore file applies only to its own directory. In particular, it does not apply recursively to lower-level directories.