Whenever you download an object from the BIM Components portal, spare a thought for the tireless soul who created it. Better yet, you might consider contributing an object or two for the benefit and enjoyment of the ArchiCAD community.
There are a number of roads to producing a GDL object. You can:
But let’s assume that you are serious about producing a quality library part.
The first step, then, is to create the object.
1. From your File menu, choose Libraries and Objects > New Object.
3. Add your name as the Author, and (if you like) add a Description and some Keyword.
4. From the File menu, choose Save, and save the object into a loaded library.
So now you have saved a brand new GDL library part. It doesn’t do anything yet, but it’s a start.