Dear Xu Miao, dear Forum,

By the way, when I tried to use cryst under xgap, I found the
wyckoffgraph didn't work. I checked the source code, found when xgap
initializing gap and automatically load the packages in, xgap hadn't
loaded yet. So cryst will forbidden the wyckoffgraph functions.
However, xgap package will be loaded after the gap is working. So I
have to take the cryst off the automatically load list and manually
load after the xgap finishing initialization. Hope this is useful.

I was aware of the problem. When autoloading, Cryst is loaded before
one can determine whether one is running under XGAP. This will be
fixed in the upcoming GAP 4.4.

Cryst is a really good tool and thanks again for your help!

Thanks!

Best regards,

Franz Gähler
_____________________________________________________________________________
Dr. Franz Gähler             Phone  +49 711 / 685 52 60 
ITAP, Universität Stuttgart  Fax    +49 711 / 685 52 71
Pfaffenwaldring 57           Email  gaehler@itap.physik.uni-stuttgart.de
70550 Stuttgart, Germany     http://www.itap.physik.uni-stuttgart.de/~gaehler