The sony stalk mapping is currently defined by the Player software, not the tuner [the tuner merely reports what button(s) you have pressed].
The Stalk mappings are 'official' - the only reason its on the CD as a HTML file and not the manual proper was because the document was created after the player was EOL'ed and the Technical Writer/documentation persons at SB were reassigned to other non-EOL'ed products [this according to rob I think].
I think the FAQ should:
1. Document where the file is on the 1.3 CD (\docs\Stalk Mappings.html)
2. Document what the stalk mappings are according to this document.
... and leave it at that.
If Mark Lords Hijack kernel becomes Stalk aware, then thats a different documentation issue in the same way that custom IR maps are now.