  | ### 5.3.11 voice `Type:` int `Purpose:` shows the nesting level of procedures. `Note:` See Libraries, for a small example how this is used for the display of comments while procedures are executed. `Example:`
        voice;
      ==> 1
      proc p
      {
        voice;
      };
      p();
      ==> 2
See dbprint; listvar; printlevel.

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