PICS/NG

Support for strings:PICS/1.1 supports numeric data: (PICS-1.1 labels on "1994.11.05T08:15-0500" until "1995.12.31T23:59-0000"for "http://www.w3.org/PICS/"ratings (suds 0.5 density 0 color/hue 1))PICS/NG supports strings: author="Salmon Rushdie"
Likely to be implemented in XML:
<XML><authors-stuff for "http://acme.com/" author="Rushdie"/> </XML>