ftp.nice.ch/pub/next/unix/developer/slang0.99-34.NIHS.b.tar.gz#/local/include

slang.h
[View slang.h] 

slcurses.h
[View slcurses.h] 

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.