| Subject | English | Polish |
| pwr.lines. | group reference pilot | pilot grupy pierwotnej |
| pwr.lines. | group reference pilot | sygnał pilotujący grupy pierwotnej |
| comp., MS | reference group | grupą odwołania (A group that is associated with another group so that their properties and the properties of the groups and fields they contain always match. If the properties of one group are changed, the other group is updated automatically) |