NEXT and PREVIOUS were keywords which became obsolete in the revision of
970731, and were effectively replaced by FSIBLING and PSIBLING. I *hope*
I'm right on this, and haven't missed a later revision, because I have
implemented it this way in JUMBO.
I don't know when the next public XLL revision is due - it's nearly 6
months old now. I am particularly keen to know the case of these and other
keywords
(e.g. attribute names and values), because changing them is a lot of effort
:-)
The repeal of case-insensitivity took place after 970731.
P.
Peter Murray-Rust, Director Virtual School of Molecular Sciences, domestic
net connection
VSMS http://www.nottingham.ac.uk/vsms, Virtual Hyperglossary
http://www.venus.co.uk/vhg