Errors and Mistakes

[Pyromasta42]

Invoker class gains a pool of evolution points while invoked but lacks any clarification on what the evolutions are that it can spend them on, which ones can be chosen for each eidolon, and suggests but doesn't state that you gain this pool to spend each time you invoke (rather than once per level, like evolution points in the Evoker class).

Is this incomplete or a mistake, or am I missing something that is supposed to be obvious?