Astrolabe gives a brief explanation of glyph's.
Glyph's are the symbols used in the picture.
They also use tight orbs which show only the strongest aspects.
Orbs are the distance between planets measured in degrees.
Aspects are the colored lines in the inner circle.
They show which planets interact and how they interact.
This means that if one planet is triggered the other planet is connected.
Kind of like pool balls in a billiard game.