@Polaris NorthOk, here we go.. I might as well explain some of the other disciplines as well.
Runes - By enscribing a certain combination of symbols onto a surface or object, then injecting a fuel source = Aeon, you are able to bring an inanimate to life from almost nothing nothing. No resource, no Equivalent Exchange. They are self sustaining, and as real as can be. Examples of things created by Runes are Golems and Elementals. A Thrall (Skyrim) can be considered to be created from Runes as well. A very dangerous, energy taxing, and difficult Discipline.
Glyphs - This is more like what you were describing. A set combination of symbols, fueled by the users Aeon, can influence the objects and entities around it. It can buff allies and debuff enemies, as well as affect the environment itself. Unlike Runes, Glyphs need to be constantly fueled by the users Aeon, until they are no longer needed
Seals - A combination of symbols that allow one to seal one entity into another. Objects, beings, Elemental Attacks, it all depends on the symbols that the user chooses to use. However, there is a price that is asked when trying to seal a sentient being: Blood.
All of these are dangerous in their own right, as all of them NEED precision and accuracy. A single mis-stroke can change the meaning of a symbol entirely. What once was a freezing trap becomes a potential black hole. Each individual Discipline use a different set of symbols, but they are some what similar between Glyphs and Seals.