Homepage:
http://www.phpinsider.com/php/code/Smarty/

ChangeLog for 1.3.1:
    - document first, last, index_prev, index_next (Monte)
    - added 'first' and 'last' section properties. (Andrei)
    - split out compiling code to separate class for faster template
execution
      time (Monte)
    - fixed a couple of minor PHP warnings (Monte)
    - added and documented unregister_modifier() and
unregister_function() API
      calls. (Monte)
    - added and documented 'fetch' and 'math' functions. (Monte)
    - added ability to index looped variables by section properties,
e.g.
      $foo.index_prev/bar. (Andrei)
    - added index_prev and index_next section properties. (Andrei)
    - fixed issue with php executing in literal blocks. (Monte)