Display modes affect a document's onscreen representation, but not its object data or output quality.
When Full Display is selected, Fireworks displays the document in all available colors with full detail. When Full Display is deselected, Fireworks displays paths as 1 pixel wide with no fill and displays images with an X through them.
Display and draft modes
You can now preview how the document would appear on the other computer platform. For example, if you are working on the Windows platform, you can use this command to preview how a document would appear on the Macintosh platform.