Gerber RS-274x files:
ignignokt.cmp	Top (component) side foil
ignignokt.fab	Fab print
ignignokt.plc	Top silkscreen
ignignokt.sol	Bottom (solder) side foil
ignignokt.stc	top side soldermask
ignignokt.sts	bottom side soldermask

Excellon drill file:
ignignokt.drd

Ascii files:
ignignokt.gpi	Aperture file
ignignokt.dri	drill info file
ignignokt.drl	ASCII drill rack file

Note: bottom side foil and mask are mirrored
