What is the Channeling Specialisation : by college order?

I asked this question via the support link at bottom of the forum page some time ago, and got response:

Question: The Channelling Skill has "by order" as a specialisation. Since power is generic, chanelling is never really "by order" - only spell use (or identification) is - so what does this really mean?

Answer: While power may be considered generic mechanically, in the setting it is a combination of the eight winds of magic. Each wind fuels a certain type or category of spells so a Channelling specialisation of Aqshy, for example, would allow a Bright Wizard to roll an additional fortune die when channelling, since he relies on that wind.

My own interpretation - since Channelling is so important, you can get an extra fortune die if you invest the advance.