Spelling has never been my strong suit.
My point was that the Hindus don't use "Om" or at least are not widely recoginsed as using it- especially as a cultural or religious identifier- in the way that the Cross is used. I am aware that its use as a mantra is primarily confined to Lamaistic Buddhism (which is not confined to Tibet).
It was not my intent to start a discussion on comparative religion. I try to steer clear of that particular morass.
If the Hindus do use "Om" in their religious practices, I was not aware of it. My undergratuate minor focused more on Islam than on the Eastern faiths and that was well over 30 years ago. I appreciate the correction.

troll