Andy Smith:In case someone reads this from Quark, my suggestion is that Quark should produce a free application (similar to Acrobat Reader) which reads Quark files but can only do limited work on them...
Well, if you want something that reads Quark files and displays them like Acrobat, then the obvious solution would be to output your Quark files to a .pdf.
Subsetting Quark's functionality into a smaller application would open a huge can of worms. Where do you draw the line? Most of the processor and memory expensive stuff in Quark would still need to be there (spellcheck, reflow, redraw), so the application wouldn't have much smaller of a footprint. It would almost be like just removing a few of the menu items. What would be gained?