Electronics uses the following file types:
| Name | Type of file |
| *.brd | Layout |
| *.sch | Schematic |
| *.lbr | Library |
| *.dbl | Design Block file |
| *.ulp | User Language Program |
| *.scr | Script file |
| *.txt | Text file (also other suffixes) |
| *.dru | Design Rules |
| *.ctl | Control parameter for the Autorouter |
| *.pro | Autorouter protocol file |
| *.job | Autorouter job |
| *.b$$ | Backup file of .brd afer finishing the Autorouter |
| *.mdl | SPICE model |
| *.cam | CAM Processor job |
| *.b#x | Backup file of BRD (x = 1..9) |
| *.s#x | Backup file of SCH (x = 1..9) |
| *.l#x | Backup file of LBR (x = 1..9) |
| *.b## | Automatic backup file of BRD |
| *.s## | Automatic backup file of SCH |
| *.l## | Automatic backup file of LBR |