ESCto come out of object drawing mode.
Shiftto hide all objects temporarily, to help you label effectively.
ESC). Select an object by clicking it in the viewer or from the Labeled objects section. Then, press the key
eor click on the pencil in the Labeled objects section to enter editing mode. From here, you can choose to Add or Subtract from the object. Draw an object that will be added or subtracted from that object. Once your object has been completed, your changes will be automatically saved.
Shift+Enteror by clicking the Mark as completed button on the top bar.