Wildcard characters usually are used to match multiple files. With most file fuctions that support it, wildcard characters can be used only in filename part. In Include/Exclude fields in menu properties, wildcards can be used in any place of file path.
* matches zero or more characters. For example, "c:\folder\*.txt" matches all text files in c:\folder folder.
? any single character.
*.* all files, but not subfolders.