[xcrysden] Periodic xyz-file

[Erwin Rossen]

I want to visualize a periodic structure which I have in xyz format.
How should the format look like to be able to read in XCrySDen? For
instance the xyz-file in the example below?

3

1 0 0
0 1 0
0 0 1

Ag   0.2 0.2 0.5
Ag   0.5 0.5 0.8
H     0.0 0.0 0.0