(load filename [command|geometry|camera])Loads the given file into geomview. The optional second argument
specifies the type of data it contains, which may be command
(geomview commands), geometry (OOGL geometric data), or
camera (OOGL camera definition). If omitted, attempts to guess
about the file’s contents.
Loading geometric data creates a new visible object; loading a camera
opens a new window; loading a command file executes those commands.