What do YOU use vertex commands for?

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Just to clarify what I am getting at - and I accept this could be complete rubbish:

Take the Blitz3D built-in example for 'AddTriangle' or 'AddSurface':
v0 = AddVertex (surf, -5,-5,0,  0  ,0)
v1 = AddVertex (surf,  5,-5,0,  1  ,0)
v2 = AddVertex (surf,  0, 5,0,  0.5,1)

tri = AddTriangle (surf,v0,v2,v1)


Technically, Blitz will let you add as many as you like 'AddVertex' commands under the first three - so you could have v3 = AddVertex (surf,xxxxx) all the way up to v1000 = AddVertex (surf,xxxxx)

Can you only process 3 at a time - is there a work-around to apply (for example) 20 'AddVertex' commands at once to a 'Surface'?

Edit:

On paper, you can make a square out of 4 of them.