Let’s think about logic.  It’s common in patternmaking to be faced with a decision of the form "If X happens, then do Y." For instance, your pattern may use a side dart only if the bust is larger than a certain size.  IF statements are common in computer programming languages, and the PatternMaker macro language is no exception. But how do we make logical choices in MacroGen?

We are going to use logical choices to modify a dart.  To start with we will create an ultra-simple piece, a square toga.  (You can think of the square part as being a placeholder for the rest of a normal bodice, which we will not use in this tutorial.)  You may open the MacroGen project file "Dart Start.mg4" or make it yourself by following the next section