These are functions and handlers common to both the HTML and print versions of the Starlink stylesheets. Library functions are in another file.
Note that Jade only supports the DSSSL Online subset of DSSSL, so some
more advanced features will be missing.
See:
<http://sunsite.unc.edu/pub/sun-info/standards/dsssl/dssslo/do960816.htm>
and
<http://www.jclark.com/jade/#limitations>
for further details.