| A | A axis of machine |
| B | B axis of machine |
| C | C axis of machine |
| D | Tool radius compensation number |
| F | Feedrate |
| G | See G-codes table |
| H | Tool lenght offset index |
| I | X axis offset for arc |
| | X offset in G87 canned cycle |
| J | Y axis offset for arcs |
| | Y offset in G87 canned cycle |
| K | Z axis offset for arcs |
| | Z offset in G87 canned cycle |
| L | Number or repetitions in canned cycles/subroutines |
| | L1/L2: tool offset settings / fixture offset (with G10) |
| M | See M-codes |
| N | Line number |
| O | Subroutine label number |
| P | Dwell time in a canned cycle |
| | Dwell time with G4 |
| | Tool / Fixture number (with G10) |
| | Tool radius (with G41 / G42 |
| Q | Feed increment in G83 canned cycle |
| | Repetitions of subroutine call |
| R | Arc radius |
| | Canned cycle retract level |
| S | Spindle speed |
| T | Tool selection |
| X | X axis of machine |
| Y | Y axis of machine |
| Z | Z axis of machine |
