[tlaplus] Font dependency specification

[marta zhango <martazhango@xxxxxxxxx>]

I want to describe that font attributes are dependent upon three things -

 fontset, faces, and overlays.  How can I write this in TLA?

Perhaps like this

FontAttris(point) \def

\E face \in ActiveFaces(point),

\E overlay \in OverlaysAt(point),

\E charset \in Fontset(point)

or

FontFaceAttributes(font-at(point)) = faces(pt) ^ Overlays(pt) ^ Fontset(pt) 

or 

 □ (FontAttrs(pt) ∈ Faces(pt) × Overlays(pt) × Fontset(pt))

How can I approach this?

-- 
You received this message because you are subscribed to the Google Groups "tlaplus" group.
To unsubscribe from this group and stop receiving emails from it, send an email to tlaplus+unsubscribe@xxxxxxxxxxxxxxxx.
To view this discussion visit https://groups.google.com/d/msgid/tlaplus/6d4db21c-e84a-4e58-a434-38d2a41a6c72n%40googlegroups.com.