Gerber import information
Units Imperial
digit format 2.5
Integer 2
decimal 5
mode - absolute
zero suppression Leading

DS28C22.GTP	 - Top pastemask

DS28C22.GTO	 - Top silk screen
DS28C22.GTS	 - Top Soldermask
DS28C22.GTL	 - Top Metal

DS28C22.GBL	- Bottom metal
DS28C22.GBS	- Bottom soldermask
DS28C22.GBO	- Bottom silk screen

DS28C22.GBP	- Bottom pastemask


DS28C22.GKO	 - Mechanical / Board outline
DS28C22.GM31	 - Mechanical / Informational layer

Drill import information 
Units Imperial
digit format 2.5
Integer 2
decimal 5
mode - absolute
zero suppression none

DS28C22-Plated.TXT	- Ascii drill file
DS28C22.GG1	- Drill Position/Guide file
DS28C22.GD1	- Drill Symbol/Drawing file
