On Sun, 12 Sep 2004 00:47:37 +0200, Chel van Gennip
wrote:

One pedal is for soft, shifting the hamers so only 2 out of three strings
are hit.

I am in the process of recording an 85 year old superb classical
player and I asked him why the keyboard seemed to be shifting. I
though I was seeing an optical illusion. He explained that he was
pressing the third pedal which I believe he called the una chorda this
is Italian for single string. He said the pedal shifts the hammers to
strike only one string. This both reduces volume and gives a different
texture to the sound.