Understanding Parameter differences in Revit

As part of my upcoming presentation on  Global Parameters – “Power to the People” (Session 1.4 at 3.15pm) at RTC NA in Scottsdale, Arizona on 14 July 2016 I did a lot of research on exactly how each kind of parameter works in Revit.  It is a lot more complicated than I first thought (even though I knew from experience it was not simple).

I thought I would share some of my findings here, as they could be useful for reference generally – regardless of whether you are using Global parameters or not.  I will be referring to some of this research in my presentation, but won’t have time to go into detail as the main focus will be the exciting possibilities Global Parameters.

Understanding Different Kinds of Parameters in Revit

System Family built-in Parameters – these are properties that are hard-coded into Revit software, and can be used where available. They can usually be scheduled and sometimes tagged, but not always. They can apply as instance (&/or type) data to:

• system…