I like to give credit where credit is due – and this aspect of working formulas into parametric families deserves a bit of praise – when selecting parameters in the Family Types dialog, the view will highlight the parameters that are affected by it – very helpful when reviewing/modifying content that you may not be completely familiar with (or when complex parameter names are so cryptic you can’t readily determine what they control):
Nice visual assistance to the modeler – love it! Thanks, Factory!