This guideline is intended to be intepreted as SGML sub-policy (not official
policy). While this document does not carry the weight of official policy, it
is sufficient basis for the submission of bugs against a package. This may
change at a latter date.
Entity Management is generally left up to the implementation, and hence there
are no extant Standards that cover this. However, lack of an established
convention would prevent different segments of the SGML subsystem from
co-operating with each other, hence it is important that a policy be
established so that SGML package maintainers may depend on other parts of the
system behaving consistently.