16.4 A strategy

A strategy is like a prestrategy except in addition the user can make (and the program prompts ) certain changes of variables. The nature of these changes of variables is explained in [HS99] and sketched in Chapter 31. The NCProcess output prompts for changes of variables if NCCOV True by placing parentheses in carefully selected places. The experimental commands described in §31 actually automate this change of variable business to some extent.