InDesign expert Michael Murphy created two great Adobe TV videos on preparing accessible documents in InDesign CS5.5. Here are the links:
Interesting stuff! I was thinking that since I'm going to make an EPUB out of our magazine that I could also make an accessible PDF while I'm at it. But I'm stripping a lot of stuff out of the magazine for the purposes of the EPUB. For example, I'm only going to include one photo for each article instead of however many are in the print version (a bunch). I'll define this stripped-down version in the Articles panel.
I was thinking that an accessible PDF could also just follow that same structure. But having watched these videos, I'm guessing an accessible PDF has to have a structure for everything, correct? All photos, etc? So I can't just base the accessible PDF on the stripped-down EPUB content?