Demonstrations of Python that use various features of the Silicon Graphics IRIS machines. al Demonstrations of the audio capabilities of the Indigo. Require the built-in module 'al'. One program also needs the build-in module 'fl' (the FORMS library by Mark Overmars.) cd Demonstrations of the CD-ROM player's audio interface, built-in module 'cd'. flp Demonstrations of using the 'flp' standard module, which enables you to quickly create forms using the 'fl' built-in module (available if you use the FORMS library by Mark Overmars). gl Demonstrations of the Graphics Library (GL). Require the built-in module 'gl'. sv Demonstrations of the Indigo Video module. Requires the built-in module 'sv'. See also the following directory.