If %TRUE, the parser will not parse unsafe locations, such as local devices and local files if the playlist isn't local. This is useful if the library is parsing a playlist from a remote location such as a website.
If %TRUE, the parser will attempt to parse a playlist, even if it appears to be unsupported (usually because of its filename extension).
If %TRUE, the parser will recursively fetch playlists linked to by the current one.
If %TRUE, the parser will output debug information.