In some case you need add or delete many parameters. Spiderinnet did many great articles about parameters, here are 2 of them :

Create shared parameter

Create project parameter

Some Revit addins and extensions are adding many parameters to you project. Some are not even visible to the user. It means that you have to use API to remove it.  In most common case you’ll never see it unless you use Revit Lookup. But when you export your model or do a duct pressure loss report it appears on it. So I made a script to get quickly rid of unwanted parameters (hidden or not).


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