Question - Forte before Paragon choice

hexngone

The Charisma ability score was modified to provide a boost to Forte, which in turn boosts three different aspects of a characters stats. The three aspects of the characters stats boosted by Forte are based on the Paragon choice made after the character reaches level 30 and the ability to choose is unlocked.

So, what, if any, stats are affected by the Forte aspect of Charisma before the ability to choose a Paragon is unlocked?
I have not seen this documented in any dev blogs.

This information is important when making the first two choices at level 10 and 20 for Ability score point allocation.