index / serial #30

Hi,

I think there's a typo in the document about the index and serial properties of the atoms:
https://vmd.robinbetz.com/atomsel.html

In the standalone VMD, index is 0-based and serial is 1-based. As I tested it, the behavior of the vmd-python code also follows this convention. However, the document above had them swapped. Please kindly clarify. Thanks!

FZ