"So, here is the main page:"

thanks for links really impressive what you trying to do with GT tools, but I still cannot find documentation about the API of extending GT-Inspector

following your link here��http://www.humane-assessment.com/blog/managing-gtinspector-extensions/
GTInspector class>>gtInspectorExtensionsIn: composite
  <gtInspectorPresentationOrder: 40>
  composite list
    title: 'Extensions';
    display: [
      (Object withAllSubclasses flatCollect: [ :each |
          (Pragma
            allNamed: #gtInspectorPresentationOrder:
            in: each)
                collect: [:p | p method asRingDefinition] ]) sorted ];
    format: #gtDisplayString;
    filterOn: [ :text :each |
      each gtDisplayString includesSubstring: text caseSensitive: false ]
for example I have tried this ��and works fine and well, but since does not tell me anything about the API , for example what composite is, or where title and display come to play and generally how I can use this customisability for my classes. Your other dont help on this issue either.
I did not know that you can use GTInspector as a browser replacement. I am impressed :)