Skips in \context ChordNames ?

[Ryurick M. Hristev]

Hello,

I want to insert some "skips" in the chords displayed on top of the score.

Apparently the rests no longer work, I am getting an error:
        warning: Junking request: `Rest_req'
with Lilypond 1.6.7

So what should I use ? I.e. what is the equivalent of "_" in lyrics ?
(I couldn't find anything in the docs or on the net)

TIA
-- 
Ryurick M. Hristev mailto:address@hidden
Computer Systems Manager
University of Canterbury, Physics & Astronomy Dept., New Zealand