Thats zactly my point.
This is the same information passed to me by my RM.
So where is the origin.
Aside from the theosophical sites (which all quote the same deffinitions in their glossaries abd do not mention the symbol) I have found little information. I did find referance on a yoga site. But it is very similar and only mentions the antahkarana as a vehicle. No metion of a symbol.
So where in blazes did this symbol come from?
Knowing the source might shed some new light. :)