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help for ^sto^ 
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Toggle ^set trace^
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    ^sto^ 

Description
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^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
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    . ^sto^ 


Author
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         Nicholas J. Cox, University of Durham, U.K.
         n.j.cox@@durham.ac.uk


Also see
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On-line: @program@ 
 Manual: ^[R] program^ 

