Vim is Charityware.  You can use and copy it as much as you like, but you are
  encouraged to make a donation to orphans in Uganda.  See iccf in the vim
  documentation.
  
  There are no restrictions on distributing an unmodified copy of Vim.  Parts of
  Vim may also be distributed, but this text must always be included.  You are
  allowed to include executables that you made from the unmodified Vim sources,
  your own usage examples and Vim scripts.
  
  If you distribute a modified version of Vim, you are encouraged to send the
  maintainer a copy, including the source code.  Or make it available to the
  maintainer through ftp; let him know where it can be found.
  
  The current maintainer is Bram Moolenaar <Bram@vim.org>.

YOU MUST OBSERVE ANY AUTHORS' CONDITIONS WITH RESPECT TO
INDIVIDUAL COMPONENTS PROVIDED WITHIN THIS CODE.  SUPPORT
FOR THE TECHNOLOGIES AND DOCUMENTATION IS NOT PROVIDED 
BY SUN MICROSYSTEMS, INC.

THE TECHNOLOGIES AND DOCUMENTATION ARE PROVIDED "AS IS" WITHOUT TECHNICAL 
SUPPORT OR WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT 
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
PARTICULAR PURPOSE, OR NON-INFRINGEMENT.