/wel-bi-ˈhāvəd/
adj.
[primarily MS-DOS]
Said of software conforming to system interface guidelines and standards. Well-behaved software uses the operating system to do chores such as keyboard input, allocating memory and drawing graphics.
Oppose ill-behaved.
Software that does its job quietly and without counterintuitive effects. Esp. said of software having an interface spec sufficiently simple and well-defined that it can be used as a tool by other software.
See cat.