Page layout software developer, Quark, has indicated the newest version of QuarkXPress 7.3 has only one feature incompatible with Mac OS X 10.5 marketed as Leopard. According to Macworld magazine, Adobe Flash export in Quark Interactive Designer requires an "update with fully tested Leopard support within the next few weeks" which will be free to all registered QuarkXPress 7 users. Prior versions of QuarkXPress are incompatible with Leopard with no updates announced.