The various dance programs can be found on the Callerlab® website, choosing "For members" and "dance programs". In the list on that page, you can find the definitions for the and for the . You can also find definitions for other programs, charts showing how callers describe various formations, and a plethora of other information.
Also on that page, dancers might be interested in the conclusions of Callerlab’s® “Application Review Committee” (ARC). [ ] As described by Callerlab®, this committee was formed “to review the proper or improper usage of square dance calls. The committee is composed of knowledgeable callers from all over the world who review written requests from callers and/or dancers and decide as to the proper or improper application of these calls.” It might be noted that there is no "enforcement power" to these decisions; callers are free to disagree and sometimes use that application of a call anyway.
The most detail-oriented dancers might also be interested in what Callerlab® considers the "Standard Applications" for the various moves. 
Other DBD Clubs and Programs:
Naturally, we feel that UNCONVENTIONAL SQUARES would be your best choice, providing the finest possible experience in Plus level DBD Square dancing. Of course, dancing at more than one club is wonderful, so we list some other DBD programs. (If you’d like your program listed, contact Joe Pryluck; contact info on home page.)
-- Second and Fourth Saturdays, Warminster PA
with various callers
Four County Squares -- Fun Plus
(DBD) workshops, Tuesday evenings Sykesville, MD with John
Marshall and Dayle Hodge.
Four County Squares
Adams Apples – Tuesday evenings, Herndon VA with Dick Otis and Ken Jordan
Old Dominion Squares - First, Third, and Fifth Saturdays, Herndon VA, early workshop with Dick Otis, followed by regular dance with various callers
– First and Third Tuesdays, Vienna VA with Bill Harrison
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