[pstricks] psspan in psmatrix

[Hernando Diaz]

I´ve tried with MikTEX and had no problem. The A spans four columns.
My file list
*File List*
 minimal.cls    2001/05/25 Standard LaTeX minimal class
pst-node.sty    2004/07/15 package wrapper for pst-node.tex
pstricks.sty    2005/12/19 v0.31 LaTeX wrapper for `PSTricks' (RN,HV)
pstricks.tex    2006/02/06 v1.14a `PSTricks' (tvz)
  xcolor.sty    2005/12/21 v2.09 LaTeX color extensions (UK)
   color.cfg    2005/12/29 v1.1 MiKTeX 'color' configuration
   dvips.def    1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)
pst-node.tex    2000/11/09 97 patch 11 `pst-node' (tvz)

Hernando Diaz