True. But you can still discourage their use to improve
interoperability, as is done with numerous SGML features in the
current draft: variants of minimized tags in 2.2.1, ">" in attribute
values in 2.2.3, use of <UL COMPACT="compact"> in same, ">" in
comments in 2.2.5, etc...
-- François Yergeau <yergeau@alis.ca>