Bug: When Prism 6 Mac is in full screen mode, the Draw toolbar menu or some font selections are not available.
The Prism 6 toolbar has a draw button that drops a menu of drawing tools.
This menu of tools is only available via the toolbar, not via the main menu.
Bug in all releases of Prism 6 up to 6.0f: The draw menu appears and immediately disappears when Prism has been expanded to full screen mode. To get to full screen mode, click the button in the upper right of the toolbar.
A related bug is that all fonts can be gray when you drop the font menu in full screen mode.
The workaround for both problems is to exit the full-screen mode and return to standard view. Then the Draw menu and font selections will work fine.