\raise not working with 2.5.18 ??

[Tapio Tuovila]

Hi,
compiled 2.5.18 recently twice; first from CVS, then from source of the 
6.4. release. With both I noticed no effect in output when trying \raise 
in text markup, example as follows:

c''4. ^\markup {"" \halign #0.1 \raise #2.5 \bold "ad libitum"} b8 _(\> 
a8. g16)

The output looks similar also if I try \raise #1.5 or no \raise at all.

(BTW: In the documentation of 2.5.18 / 9.4 'Text markup' the texts 
"not-raised" and "raised" seem to be on the same level, too.)

Is this \raise -feature somehow changed, is there a bug or am I doing 
s-ing stupid?

Greetings, Tapio