A crew member can be info-linked or info-unlinked.
A crew member is usually info-linked.

A crew member can be on-duty or off-duty.
A crew member is usually on-duty.

Radioing is an action applying to one topic.
Understand "radio [text]" radioing.

Fixing is an action applying to one visible thing.
Understand "fix [something]" or "repair [something]" as fixing.

Carry out Chief Engineer Skattle fixing a mylar engine (called mar):
	now mar is top-shape;
	if Chief Engineer Skattle is info-linked:
		if the player is info-linked:
			say "[bold type]INFOLINK -- CE Skattle McArabic:[roman type]'Alright, [mar] has been repaired...for now. There will still be residual radiation until I purify the afflicted rooms however.'".