ON your archicad 9 CD there is a pdf "Intro to Object Making" that, in addition to GDL, covers how to make doors and windows with the slab tool.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"
