1. wave server
   1. *wave
      1. document
         1. *element
         2. id
2. Web (JS/XHTML) client
3. modules constructor
4. *WavesClient
   1. id
   2. wavelet
      1. *module
         1. id
         2. document
            1. id
            2. model
         3. view
            1. id
            2. *tag
      2. *wave
      3. view