LU2-1-2.dim		Board dimension and NPT holes, gerber274X format
LU2-1-2.drd		Drill data, all drilled holes, execellon format
LU2-1-2.dri		Drill tooling information, text file
LU2-1-2.Stc		Solder mask, Layer1 / primary/Component side,  gerber274X format
LU2-1-2.pri 		Conductive pattern, Layer1 / primary/Component side,  gerber274X format
LU2-1-2.L2  		Conductive pattern, Layer2 / inner layer,  gerber274X format
LU2-1-2.L3  		Conductive pattern, Layer3 / inner layer,  gerber274X format
LU2-1-2.sec		Conductive pattern, Layer4 / secondary/Solder side,  gerber274X format
LU2-1-2.sts 		Solder mask, Layer4 / secondary/Solder side,  gerber274X format