The US Postal Service will institute changes on September 8, 2009

regarding the tabbing of booklets which is fairly extensive

In summary the changes will;

 - eliminate the use of perfed tabs of any kind,

 - require use of  1 1/2"  tabs

- require "trailing edge" tabbing (read additional passes on the tabber)
 

To download an MS Word copy of the proposed changes click here:  POSTAL SERVICE