OK, well, that image is the Tetragrammaton, as you know, within a Pythagorean figure of the tetractys. It's just showing that the Divine Name YHVH can be put into a form that has geometric as well as symbolic significance. The yod on top represents the point of origin. The yod, he on the second line represents the line, next in a geometric emanation. The yod, he, vav on the third line is the first emanation from point to line into an actual surface, a triangle, the minimal needed 3 points to present a surface, and the final full four letters the yod, he, vav, he can be arranged into a square for a full material manifestation. That's the general idea of that arrangement. It correlatates math with letters with form with actually how the universe came to being, from a point, then a Big Bang (the beginning shown as a line, a line of energy occurring), into a plane and then material. It's kinda cool how symbolically it can then geometrically be "seen" and realize that that's actually how it occurred in our universe! It's a great meditation picture.