When I copy and paste a graph from Prism 4 (Macintosh) to PowerPoint, vertical and angled text doesn’t look right.

Prism 4 has two ways it can copy vertical and angled text to the clipboard. If you are having trouble, try the other method. Switch on the Graph tab of the Preferences dialog.

See this article if the problems occur when you create a PowerPoint file on Windows, and then open it on the Mac.