i know this has been discussed before and many different answers have been given, but i think i have the correct answer now. the correct answer is GAotU, which means "Grand Architect of the Universe".

in fact, i believe, the EMBLEM itself stands for GAotU.

the G stands for Grand
the "compass" is a stylized A, for Architect
(usually small words like of, the, etc are not represented)
the "rule" is a stylized U, for Universe

i don't believe this has ever been proposed in the other threads. i know the GAOTU has been said, but i don't believe the proposal about the EMBLEM has been mentioned.