What shall I name my top paste file for the mask?
How about supporting CADSTAR files?
hisenberg methman commented
The openings on solder mask layer have no solder mask ink, but the openings on paste mask layer have paste.
2) The solder mask layer is one part on the circuit board, but the paste mask layer is not. Paste mask layer is just for the stencil.
3) Solder mask is used for applying solder mask ink, but paste mask is used for applying paste.
4) Solder mask is applied when making PCB board, but paste mask is used when assembling.