TrAX passe?

Though the transformation APIs are alive and well, Sun doesn't seem to use
this acronym for the Transformation API for XML frequently anymore. For
example, it only shows up in the spec for JAXP 1.1 three times (once for the
TrAX mailing list, twice in the  javax.xml.transform.sax.SAXSource Javadoc).
It only shows up twice (on same page) in the Javadocs for 1.4.1 and 1.4.2
for javax.xml.transform.sax.SAXSource.

Any insight on this?

Mike