DarkBASIC Pro doesn't support Quake MDL, it support Half-Life MDL which most DEFINATELY is Skeletal Based format.
MD2 and MD3 have to be compiled WITH skeletons but are frame indexed formats.
remember i'm the one who created the importers for these formats in DarkBASIC Enhanced - i've learnt one hell of alot about them.
GLM is the first Skeleteal Quake Based format, because MDL is Values from the top<>bottom.
remember that MDL is a common term, i've noticed a few other programs use it - probably because id Software don't have a proprioty on it.
DBO or DarkBASIC Object Format, the the native object format that DBS are working on which hopefully will give you the ability to inlcude alot of things withing it natively and have full access within DB ... Skeletons / Shaders / Vertex Weighting / Vertex Colours / Alpha Materials / etc...
it was promised with p4.0 however we've yet to see it, i do look forward to it in u5.0