| O,I | free space (drift) |
| B,D | combined function magnet |
| G | magnet edge |
| Q | quad |
| C | Solenoid |
| CC | pseudo-solenoid (radial focusing only) |
| S | sextupole |
| M | multipole & axial symmetric multipole |
| A | pill-box RF cavity (PI standing wave, perturbation theory) |
| W | general RF cavity (PI standing wave, numerical integration) |
| E | electrostatic acc. section |
| R | combined electrostatic and magnetostatic bend (generalized Wien filter) |
| L | electrostatic quadrupole |
| K | transverse corrector |
| Z | longitudinal corrector |