For complicated reasons, one of the copies of BaseX I am working with
at the moment is (as far as I can tell) version 6.7; is there a convenient
way to find the 6.7 documentation on the BaseX site?  Or should one
just read the current documentation and be prepared to ignore all the
material marked as new in 7.0?  I'm particularly interested in reading up on
the http interface, which I know has changed a lot in 7.0.  

At some point, I expect that that copy of BaseX will be upgraded to 
version 7, but for now if I want to work with that copy, I need to address
it in 6.7 terms.

Michael Sperberg-McQueen