hole, design_export.xln
top silkscreen, design_export.gto
top solder mask, design_export.gts
top paste, design_export.gtp
top copper, design_export.gtl
bottom copper, design_export.gbl
bottom paste, design_export.gbp
bottom solder mask, design_export.gbs
bottom silkscreen, design_export.gbo
mechanical details, design_export.gko