Clears the trace flag for the specified functions
Supported Platforms: Windows and Mac OS
(untrace [function ...])
Type: Symbol
A symbol that names a function. If function is not specified, untrace has no effect.
Type: Symbol or nil
The last function name passed to untrace. If function was not specified, untrace returns nil.
The following command clears the trace flag for function foo:
(untrace foo) FOO