Such cross-references will be maintained with a simple
re-translation
even after one or more of the documents have been broken into
different physical parts or moved.
The mechanism is based on the new commands externallabels and externalref which are an extension of the simple label-ref pairs.
The following were contributed by Robert S. Thau <rst@ai.mit.edu>:
.
For the messier cases,
the definition is scooped up and moved to the preamble. This allows
the translator to handle the simple, but nonstandard, postscript figure inclusion
macros as well as an awful lot of other stuff done with gratuitous
defs.