abc2pscompat bool

Handle old abc2ps tunes.

When set, 'M' becomes the !tenuto! decoration and a pitch translation may be done for the bass and alto clefs (respectively, 2 and 1 octaves down).

It is preferable to rewrite the old tunes to comply with the current standard rather than using this parameter. For example, in the tune, you could include:

U: M = !tenuto!
K:C clef=bass octave=-2

X:1
M:C
L:1/4
%%abc2pscompat 1
K:C bass
Mabc'd' |

X:2
M:C
L:1/4
U: M = !tenuto!
K:C bass octave=-2
Mabc'd' |