bg

Requiring at least ComputerCraft 1.6 and an advanced system to use, the bg command starts a given script in a new multishell tab. If no target script is specified, a new shell will launch in that tab instead. The previous tab will remain selected, whereas the new one can be selected from the top menu bar (which is only visible when multiple tabs are available).

See also: fg

Example
Launches the game adventure in a new multishell tab.
Code	bg adventure