Inverted minors refers to a treatment introduced by the Kaplan–Sheinwold (K–S) bidding system for the popular card game bridge. The original structure of Precision, another bidding system, also employed inverted minors over a 1♦ opening. However, the treatment is no longer restricted to users of these bidding systems.[1] although partnerships that use a Short club system (where a 1♣ opener might only have 2 clubs) tend also to use the convention only after a 1♦ opener.[2]
DLegrow was invoked but never defined (see the help page).