I was chatting to a friend the other day who had been told by an advertising agency that Quark is not compatible between the PC and the Mac. I’m not quite sure where the advertising agency found their information because I have been using Quark successfully between the PC and Mac for around six years now. On one project I spent a lot of time working with style sheets between Quark on a PC and Quark on a Mac. I found with this that as long as the style sheets have all the same names they import perfectly. Saying this you can experience some slight text reflow between the Mac and PC versions of Quark. This is usually caused by the fact that the fonts differ slightly between the two systems. I would be interested to hear from other people that have worked with Quark on cross platform projects.