For advanced users. Specify the filters used to find the filename.

Available parameters:

• %wordpress%: The WordPress root folder
• %type-folder%: The folder for the requested filetype (comic, rss, archive, or mini)
• %date-(format)%: The formatting to use for the requested date as per the date() function (ex: %date-Ymd% is )
• %upload-path%: The value of the upload_path option, which is the destination upload directory for WPMU installs.