A help command is provided.
cl > help pros will give an overview of useful help tasks and files in the PROS/XRAY packages. cl > help package-name will give one line of explanation for each of its tasks or packages. cl > help task-name will give detailed information about that task. This is also the best way to find the package in which a task resides.
The following commands are useful for package management:
cl > ? # Lists tasks and subpackages of the current package cl > ?? # Lists all tasks and subpackages currently loaded cl > bye # Unloads the current package, returning to the previous one