IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
The section "mb_event_system_5" of Mark Bickford's Event Systems library.
(creation_script.lisp)
Wed Nov 5 13:44:47 EST 2003
IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html