Repair

The repair cursor, when you left-click on one of your buildings, puts that structure into repair mode. You should see an animating wrench icon on the building during this time. To toggle repair mode off, just click the repair cursor on that building a second time.

In repair mode, the structure regains health slowly; this also incrementally consumes credits. Should you run out of credits, the repair mode stays in place, but the building does not gain any benefit until there are enough credits to spend. Repair mode shuts off automatically when the building reaches full health.

You can repair buildings that are presently being attacked; doing this helps prolong the structure’s survival and may even outpace the damage being done to the building, depending on what units are attacking it. When this is the case, you may need to click the repair cursor on the building multiple times, because the moment the building reaches full health the repair mode shuts off even if the structure is still taking damage.

Repairs cost credits; however, it is virtually always cheaper to repair a building than it is to rebuild it from scratch. So it is usually a good idea to try to preserve your existing structures where possible.