I'm been using ArchiCAD from version 4.55, and the Library then was *VERY* poor. So we were in the real need of creating some object.
In my youth I played a lot with old computers and the BASIC programming language, so I was lucky in this, as the GDL is very similar to BASIC.
The Library (number and complexity of objects) and the language itself evolved following some curve path, without "steps" so, for the purpose of learning the language starting at a low level, 6.5 is better than (say) 10. And 5 is better than 6.5 and 6.
But often 6.5 is used as a stop, because it was (if I remember it correctly) the firs version in wich the objects were multiplatform. Starting from then, the same object could be used without changes on both, Windows and Macintosh.
Note that the difference was in the file format, and NOT in the GDL content.
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For the very old users...
Do you remember? At that time ArchiCAD had B/W "flat" icons, and 16 layers, without name (only a number, like the GDL Fragments). Walls couldn't be trimmed at roofs, but in the settings you could define one or two cuts, for the top edges (L&H of a triangle to cut away).
And the GDL had only "one letter" names for numeric variables (so a maximum of 26 variables!). No text string variables...
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--Roberto Corona--
www.archiradar.com
AC18 - ITA full on Win10
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