correct way of reducing size in (HA-)prosper with psfrag

Hi,

I'm searching for a way to reduce the font size in text which is
included with psfrag.

\psfrag{foo}{\tiny bar}%

I'd like to have a smaller font size i.e. the font size used
in the foot of the (HA-)prosper style. So far I've only managed
to achieve this with this:

\psfrag{foo}[][][.5]{bar}
                ^^^^

What's the correct way of doing this?

TIA,

Patrick
-- 
"If anyone tells me to work smarter, not harder, I will kick him or her, 
hard, in a random body part.  I will then kick him or her a second time, 
"smarter, not harder," which is to say that on the second strike, I'll 
use the same force, but target more carefully.  "           -- Catherine




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