// Use this tool to label a line selection with the length of the line.
// You can move the label until the mouse button is released.

  macro "Label Line Tool - Ca00P323ece00P424dde00" {
      getCursorLoc(x, y, z, flags);
      if (selectionType<5 || selectionType>7)
          exit("Line selection required");
      run("Measure");
      length = getResult("Length", nResults-1);
      run("Draw");
      run("Select None");
      snapshot();
      while(flags&16!=0) {
          drawString(round(length), x, y);
          getCursorLoc(x, y, z, flags);
          wait(25);
          reset();
     }
     drawString(round(length), x, y);
 }