TEXMAP addition to Official Library Spec

[Travis Cobbs]

I proposed the following addition to the Official Library Spec to go with the proposed rev the !TEXMAP meta:

Under META Commands add:

!TEXMAP Meta
The !TEXMAP NEXT command or geometry2 lines (as outlined in the Texture Mapping (!TEXMAP) Language Extension) will not be used.

Sufficient !TEXMAP FALLBACK geometry3 lines must be included such that the part renders correctly in non-!TEXMAP supporting programs. It is highly encouraged that the included fallback geometry reflect the pattern created by the !TEXMAP, even if it is reduced in resolution or colors, but this is not required.

The two new paragraphs are basically contradictory. If "real" fallback geometry is only "highly encouraged", then it's not appropriate to forbid geometry2 lines (and the NEXT command). Since the second paragraph states that it is acceptable (although discouraged) to submit a part that shows blank geometry where the texture is, the best way to do that is to omit the geometry1 and geometry3 sections entirely. It would not be acceptable to only have a geometry1 section, though.