[gnu.emacs] Inverse video query

damerell@NSS.CS.UCL.AC.UK (Dr R M Damerell, RHBNC) (02/24/89)

I think the version we have is 18.50. Before I start re-inventing wheels,
please could you kindly tell me if there has been any work done on:

PASCAL mode
Use of inverse video (e.g. to show the region)

Also: is there any document that describes how Emacs manages the screen?
Thank you, Mark