Hello!
The MODS guidelines at
http://www.loc.gov/standards/mods/v3/mods-userguide-elements.html#coordinates state
that:
> No three points should be co-linear,
I wonder whether this should be interpreted as an exclusion of polygon
concavity or if this sentence should be reformulated in the guidelines.
If concave polygons are allowed, then I consider that three (or more)
co-linear points should be allowed when these points do not directly follow
each other.
Regards!
SaaĊĦha,
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