I was looking for conditional compilation hints in the forums, as I want to back-rev a dummy cConnection class into 18.2 so that there's one less thing to think about for final migration.
I found a 2008 conversation about !@, FMAC_VERSION, REQUIRED_RT_VERSION and so on.
Only !@ is in the 19.0 help, which is fine for my purposes, but shouldn't the others be as well?