The Mainstream Committee, under the leadership of Johnny LeClair, Jon Jones, Jack Murtha, and Martin Mallard, developed the Mainstream Program now in use.& The word "tentative" was used with the program until 1976, when it was dropped.  There has been a great deal of stability in the program with only four calls being added since 1976; Touch Family, Pass The Ocean, Ferris Wheel and Recycle.  A large percentage of the calls adopted in 1976 still are in the program.  A methodology of changing the Mainstream Program was been established - no more than three calls to be added or more than three calls to be dropped in any given year.  In 1988, one parent call and  three sub calls were dropped.  In 1993 under the direction of Larry Cole the committee deleted one call and two sub calls from the program.  No more than three (3) additions or deletions of parent calls may be made any one convention.