// This macro switches to the next tool when you press F1.
// Add it to ImageJ/macros/StartupMacros.txt and it will be
// automatically installed when ImageJ starts.

  var index = 0;
  var tools = newArray('rectangle','elliptical','brush','polygon',
     'freehand','line','polyline','freeline','arrow','angle','point',
     'multipoint','wand','text','zoom','hand','dropper');

  macro 'Switch Tools [f1]' {
     requires('1.43n'); // arrow tool
     setTool(tools[index]);
     index++;
     if (index==tools.length) index = 0;
  }