Thanks Sandy. That wasn't exactly what I was after but gave me an idea that
worked. I wanted all text boxes, whenever I wished to add one in slide view,
to default to Tahoma gold instead of TNR black. I achieved this by selecting
Master slide, ensuring that I was not selecting any existing area, then
clicking Format, Font. I set this to my required font and saved the master
slide as a .pot in the Templates folder. Now whenever I build a presentation
that requires an added text box, it employs my selected font.