ftp.nice.ch/pub/next/developer/languages/modula/SRC-m3.3.N.b.tar.gz#/usr/local/lib/m3/pkg/libm3/src/sx

Sx.i3
 

Sx.m3
 

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