A hypertext may be used to display a text file with embedded script code.

  interface hypertext : widget {
  
  hypertext();
  
  hypertext(char* p, char * options = "");
  hypertext(widget* w, char* p, char * options = "");
  
  void file(char* r);  // to read in a file
  };
  

An example of a help file is given below:

    If you do not wish to read the following text,
    click on the %% 
    button \$this.goto -text button \
            -command "global EOT; \$this gotoline $EOT"
    \$this append \$this.goto
    %% to jump to the end.
    
    Help text
    
    %%
    global EOT
    set EOT [expr \$thisline-1 ]
    %%
    Press %%
    button \$this.quit -command { destroy . } -text quit 
    \$this append quit
    %% to remove the window.
  

widget -- file