Because a lot of GDL scripts are written not to accept zero values, you typically get an error message when trying to turn the frame "off" by assigning it "0" -- to work around this, use the value ".001" -- the frame will appear to go away. I don't know about the AUS version, but there are some doors in the US library that allow you to control the head height and jamb width of a frame independently of each other.
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004