This page has been updated several times. The most recent updates are listed first. Information regarding what was specifically updated is described in the manual letter; there is no marking on the actual page. Use the menu to select the desired update.
Update effective July 2012 (Manual Letter #52).
Update effective November 2011 (Manual Letter #46).
Update effective June 2011 (Manual Letter #43).
Update effective March 2011 (Manual Letter #42).
Update effective January 2011 (Manual Letter #41).
Update effective December 2010 (Manual Letter #39).
Update effective February 2010 (Manual Letter #31).
Update effective November 2009 (Manual Letter #28).
Update effective October 2009 (Manual Letter #27).
Update effective September 2009 (Manual Letter #26).
Update effective August 2009 (Manual Letter #25).
Update effective May 2009 (Manual Letter #22).
Update effective April 2009 (Manual Letter #21).
Update effective February 2009 (Manual Letter #19).
Update effective October 2008 (Manual Letter #16).
Update effective September 2008 (Manual Letter #15).
Update effective August 2008 (Manual Letter #14).
Update effective July 2008 (Manual Letter #13).
Update effective May 2008 (Manual Letter #12).
Update effective April 2008 (Manual Letter #11).
Update effective March 2008 (Manual Letter #10).
Update effective February 2008 (Manual Letter #9).
Update effective October 2007 (Manual Letter #7).