Type here the desired file mask(s). For example *.plt means that processed will be all files with the .plt extension in a given directory (possibly including subdirectories). Use the exclude masks to exclude certain file types. For example if the include mask will be *.P* (i.e. include all files, whose extension begins with the P character), then defining the exclude mask as *.PDF will exclude all PDF files.
If the selected Input type is List then these masks are relevant only if you have inserted directories (folders) in the list. In such case the files from these directories are enumerated along given mask(s) (possibly including subdirectories).
There can be entered more masks, they must be separated by the semicolon character.