register_btrace
Feedback.register_btrace : string * bool ref -> unit
Registers a trace variable for a boolean reference.
A call to register_btrace(nm, bref) registers a trace variable called
nm that can take on two different values (0 and 1), which correspond
to the state of the boolean variable bref.
Failure
Fails if the given name is already in use as a trace variable.
Comments
This function uses register_ftrace to make a boolean variable appear
as an integer value.
See also
Feedback,
Feedback.current_trace,
Feedback.register_trace,
Feedback.register_ftrace,
Feedback.set_trace,
Feedback.trace,
Feedback.traces