This is likely to be elementary - apologies in advance :)

Is there a command or something I can type in Immediate box to show me what
variables and objects are still loaded?
I don't much believe in my coding and always suspect that I failed to Close
/ Nothing / Unload goods. Experience tells me that I really need this
facility.

I vaguely remember this sort of thing available in Realizer - first tool to
program in Windows I used. Anybody remembers Realizer? It's like Spooky
Tooth or Grand Funk Railroad - excuse my memory lane :)

Regards,
Paul