Better define special cases

[schriftgestalt]

It would be good to specify the behavior in edge cases:

• multiple locations with single variable values:

valueRecordDef <0 0 (20 @ExtraLight:30 @ExtraBlack:10) (120 @Light:130 @Black:110)> KERN_B;

[skef]

In the "guide" or the specification? I think description of Value record format C in section 2.e.vi of the specification is pretty clear on how that example would be interpreted.

[skef]

I'll look to see if there's anything more we should be saying about this.