Toggle ^set trace^ ----------------
^sto^
Description -----------
^sto^ (acronym for both ^set trace on^ and ^set trace off^) toggles tracing on and off.
If ^trace^ is on, ^sto^ turns it off, and vice versa.
Examples --------
. ^sto^
Author ------
Nicholas J. Cox, University of Durham, U.K. n.j.cox@@durham.ac.uk
Also see --------
On-line: @program@ Manual: ^[R] program^