O (versions 8.0.11, 8.0.7, ) (IRIX and Linux)
(as well as 7.0.1 OLD! and version 6.2.2 ANCIENT!) (IRIX only)
Do source /prog/setup o to set up the environment for O and the other Uppsala Software Factory programs
See Alwyn Jones' Home Page (The kipaut link points to the release notes for the lastest "test" version.)
See Alwyn's O Essentials -- descriptions of the features and upgrades in the latest version. This is the best substitute for a full manual that there is.