Thanyou!And....I found IT.
Thankyou both Jeanette and Umbrae! They were some very interesting links.(Better than ol' style maths homework....funny that-when one's "free" one wants to learn).
I worked back thru some threads and DID actually find the one I was looking for...keyword on this could really be "phi" but today it came up first on google.
If anyone's interested, be sure to go past the intro and click on the "dimensions" on the rhs. Good graphic stuff and simple.
The Green Dragon
Thanks again,I'm really enjoying ATF and it reminds me of what I apply when I insert and draw the blank or manufacturer's card in my spread- the universe has more in store for you than you can imagine! (So much treasure after drawing up blank).