//   This is a tool macro similar to the pencil tool in NIH Image.
//   Use it to draw lines in the current foreground color (requires 1.30l).
//   Double-click on the tool icon to set the line width (requires 1.30l).
//   Press shift to draw wider lines

   var lineWidth  = 1;

   macro 'Pencil Tool - C059P1f418db3daf5' {
        requires("1.30k");
        leftClick=16; rightClick=4;
        shift=1; control=2; alt=8;
        getCursorLoc(x, y, z, flags);
        moveTo(x,y);
        x2=-1; y2=-1;
        while (true) {
            getCursorLoc(x, y, z, flags);
            if (flags&leftClick==0) exit();
            if (flags&shift!=0) setLineWidth(10); else setLineWidth(lineWidth);
            if (x!=x2 || y!=y2)
                lineTo(x,y);
            x2=x; y2 =y;
            wait(10);
        }
   }

  // ImageJ runs this macro when user double-clicks on the pencil tool icon
  macro 'Pencil Tool Options' {
    lineWidth = getNumber("Line Width:", lineWidth);
  }