What do you guys use for labelling prototypes? I am thinking particularly of control panels (19 in rack mounting for example) containing pots, toggle and rotary switched all of which need labelling. So far I have looked at iron on T shirt printer paper, special transparent overhead projector type film with built in adhesive and contacted a company that does custom stick-on vinyl decals. I need something I can design easily myself on a PC and either produce myself or have produced at reasonable cost. Any one of more of the above might work but before I take the plunge I thought I would ask what others use???