The Repair command can be given to constructors to make them repair target unit or, if it is not yet finished, assist its construction. Constructors undertaking an attack-move command will also automatically receive targeted Repair orders onto nearby valid targets.
The command also has an area version with the following modifiers:
- ALT makes the area linger even if no valid targets remain. Ordinarily the command is finished in that case.
- CTRL prevents assisting construction. Only repairing is allowed in this mode.
The area command picks targets according to the following rules, in order:
- assisting allied construction is only considered with the Roam move state.
- assisting factory construction is not considered with the Hold Position move state.
- repairing a unit currently being reclaimed is not considered.
- units currently moving are not considered if there are stationary ones.
- units closer to the builder (not area center!) are prioritised over further ones.