Further information on this topic:

Roland have now published manuals for their current and recent arrangers at:
http://www.rolandkeyboardclub.com

These include the G-70, EXR series, VA series etc. The manuals are available in several different languages and, this time, are in fully editable PDF format (as opposed to a "pictorial" type scan of paper originals).

Ten out of ten to Roland for doing this! Let us hope that it is an early sign of a more customer focussed attitude from them.