Hi, I myself never done it, but i saw in Voss-Mathmode.pdf (which i download from the Internet) at section 71, Node Connections, a description of how to do it like you want to. You should also add to the preamble this option: \usepackage{pst-node}
I would also suggest you to all at this file: http://www.solace.net/nash/math/Logic/Mathematical%20Logic%202.5.lyx Good luck Hannan On Sun, 23 Jan 2005 12:28:39 +0100, Gunnar <[EMAIL PROTECTED]> wrote: > In many textbooks you "show" that (a+b)(a+b)=a^2+2ab+b^2 by drawing arrows > like in the attached image. > How can I do that in LyX? > > >