[xml] xml element name question

[Yan Seiner <yan seiner com>]

Could someone point me to a simple reference on XML element names?

I need to know if numerical tags are legal...

Something like this:

<1> ... </1>

ISTR reading somethere that they are not, but I need to be able to 
confirm it.  I've tried to read the w3.org docs but they are far over my 
head....

Thanks,

--Yan