You can use either "lpstat -t" for the printer details, and "cancel" with the spoolid as the argment to cancel print jobs. Or start 'scoadmin' and select printers to use either the character based system, or graphical X-Windows.
You could also use 'finger' to list the currently connected clients.
Assuming the system was installed using the defaults, all the manuals are available through the web server. (
http://ipaddress of SCO system)