function CreateOutputMarqueeProgressPage(const ACaption, ADescription: String): TOutputMarqueeProgressWizardPage;
Creates a wizard page containing static text as well as a marquee progress bar.
See CreateOutputProgressPage for information on how to work with progress pages.
To animate the progress bar, call the Animate method. Do not call the SetProgress method, it will raise an internal error.
See AllPagesExample.iss for an example.