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transcript-on
transcript-off

 (require mzlib/transcr)

The transcript-on and transcript-off procedures of mzscheme always raise exn:fail:unsupported. The mzlib/transcr library provides working versions of transcript-on and transcript-off.

procedure

(transcript-on filename)  any

  filename : any/c

procedure

(transcript-off)  any

Starts/stops recording a transcript at filename.