Documentation of user-contributed code:

[include/rrd_functions.php]
- 2/8/2002 - Dave Neitz, Sprint E|Solutionns 
  Added 3 new CDEF special types: 

  Type  Description
  ----  ----------- 
   3    Total staggered datasources.
   4    Average all datasources.
   5    Average staggered datasources.

  Staggered datasources are determined by parsing graph item value
  column in the following manner:

  start=<starting position in datasource>&skip=<skip count>
  
[graphs_items.php]
- 2/8/2002 - Dave Neitz, Sprint E|Solutionns
Added additional screen help text to support value expanded usage.