computer-go: gtp mode

["max-d" <max-d@xxxxxxxxxx>]

Hi
I apologize to post that here but i can't succeed posting on GNUgo dev forum
...

I'm trying to make my own Gnugo UI using Delphi.
the program is able to communicate with Gnugo but this one
plays (and allows to play) on the "T" column .

i use this line to invoke Gnugo.exe:
gnugo.3.2.exe --level x --boardsize 19 --mode gtp

I have also some problems with captured stones.
Is there a GTP command showing them or must i compute that by myself ?

Can someone tell me a web-link about GTP protocol ?

in advance , many thanks !
md.