This is documentation for Mathematica 7, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)


is a symbol whose value is True if it is evaluated while a control is active, or in certain other previewing situations.
  • ControlActive[act, norm] is effectively equivalent to If[$ControlActiveSetting, act, norm].
Detect when controls in Manipulate are being used:
Most plot functions use $PerformanceGoal to control visualization quality:
Hence the default behavior is effectively the following:
New in 6