H: This adds new attributes to the attribute table. At most 64
H: attributes may be defined.
---
-N: rmatt
-P: AFS_READ | AFS_WRITE
-D: Remove attribute(s).
-U: rmatt pattern...
-H: Remove all attributes matching any given pattern. All information
-H: about this attribute in the audio file table is lost.
----
N: rm
P: AFS_READ | AFS_WRITE
D: Remove entries from the audio file table.