Valid values are any character string. Use this to create named points in your presentation that the viewer can jump to interactively. The chapter names appear as a pop-up list in the controller. This allows you to add a QuickTime chapter list to a SMIL presentation. The viewer could jump to the corresponding point in the SMIL presentation at any time.
Legal values are all and clip.
This is used to create partial or complete transparency. Possible modes are copy none direct. These modes all specify no transparency, which is the default for most image formats. It accepts a second parameter, color, that specifies the color to be rendered as transparent. The color parameter may be any valid color specification supported by Cascading Style Sheets, level 2.