I didn't know there were 4 new rune words...

[adeyke]

EDIT: For some unknown reason, Shael Um Thul occupy 4 sockets according to AS.

It's just another stunning display of the AS's infallibility and impeccable precision ;).

You'll also note that it lists +53 AR for Wind, while the only AR it has is the +50 from the El. Apparently, someone made the Wind in a superior weapon.