Thieves can get the scroll skill.

Thieves can get Arcane Literacy(?) skill that says makes them recite scrolls at the level a mage can.

All mages get spellcraft.

Questions:
1) Does spellcraft increase the level of scrolls when recited?
2) Does Arcane Literacy allow a thief to recite scrolls with the level of a mage with or without spellcraft (assuming spellcraft increases scroll level)?
3) Does a thief without Arcane Literacy recite scrolls at a lower level than what the scroll is? Any idea how many?
4) Does anyone know what benefits you get if you have Arcane Literacy and a high % in pen and whatever the other skill is that's supposed to synergize with Arcane Literacy?