%ICON{"name"}% generates the full HTML img tag. Specify image name or full filename (see ICON for details on filenames.)
%ICONURL{"name"}%
%ICONURL{"arrowbright"}% returns http://www.redbourn.org.uk/pub/System/DocumentGraphics/arrowbright.png
%ICONURL{"novel.pdf"}% returns http://www.redbourn.org.uk/pub/System/DocumentGraphics/pdf.png
%ICONURL{"/queen/boheme.mp3"}% returns http://www.redbourn.org.uk/pub/System/DocumentGraphics/mp3.png