I want to do something very simple, but I just can't figure out how to do it. I just want to draw an arrow that starts on, say, atom 1 and stops halfway in the direction of, say, atom 10. The thing is that I have to do this several times so would like not to have to go in the xyz file and use XYZ coordinates.

Anyone can help?


Guillaume Dumont
(514) 341 5298
(514) 343 6111 ext. 13279