Foreground: [UNIX] Vt. To Bring A Task To The Top Of One's
{stack} For Immediate Processing, And Hackers Often Use It In
This Sense For Non-computer Tasks.
:foreground: [UNIX] vt. To bring a task to the top of one's
{stack} for immediate processing, and hackers often use it in
this sense for non-computer tasks. "If your presentation is due
next week, I guess I'd better foreground writing up the design
document."
Technically, on a time-sharing system, a task executing in
foreground is one able to accept input from and return output to
the user; oppose {background}. Nowadays this term is primarily
associated with {{UNIX}}, but it appears first to have been used
in this sense on OS/360. Normally, there is only one foreground
task per terminal (or terminal window); having multiple processes
simultaneously reading the keyboard is a good way to {lose}.
-- The AI Hackers Dictionary