While at it...
Tweaks DefaultDrum (and
DefaultTone) set the patch (program) for the drum channel. This is usually referred to as the drum kit.
GM defines only one drum kit (Standard Drum Kit) but all 'real life' implementations follow Roland GS and have several drum kits to use.
I'd like to propose to promote setting the drum kit from a tweak to a real command:
DrumKit Namewhere
Name can be one of the GS names, or a number.
See
https://en.wikipedia.org/wiki/Roland_GSAlso, being able to say
Tweaks DefaultDrum=Oboe doesn't really makes sense to me
. The drum voices and the melodic voices should use separate tables.