Jepp and others do provide made-to-order tailored plates if requested. Some, I believe Jepp is one of them have the expertise to even devise the underlying procedure.
http://www.asap.sk/about-us/projects...arab-emirates/
. No trace of the procedure from FAA sources.
. No trace of the procedure from the world-wide database of Jepp's competitor.
. PPRuNe claims that the procedure exists and have Jepps pictures of it.
Where is the tie to these loose ends? Most likely I did miss something.
The FMS DB coding is provided on the same principle, it is a mere representation of data laid-out elsewhere, not a source by itself.