These are reference implementations for (some of) the Forth extensions that have had a CfV. You can get all of them by downloading them as a zip file. 
Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory                             -   
[   ] deferred.fs             31-May-2005 10:17  378   
[   ] defined.fs              04-Oct-2005 10:34  125   
[   ] extension-query.fs      16-Mar-2005 15:25  4.3K  
[   ] ftrunc.fs               16-May-2009 19:04  365   
[   ] parse-name.fs           31-May-2005 10:17  520   
[   ] required.fs             12-Feb-2006 18:56  1.8K  
[   ] structures.fs           08-Jun-2007 10:52  1.5K