Alright, thematically the idea is that each Archetype focuses on one aspect of the Red Mage's abilities:

Duskblade: Offensive Magic
Combat Medic: Healing Magic
Magician: Magical Ability
Soldier: Martial Ability
Traveller: Blending both Magic and Martial together

This allows you to make the Red Mage a little bit better at the thing you want him to be best at, or the thing the party's lacking. If the party already has a dedicated Blaster, but very little healing ability, then you can go Combat Medic, for instance.



Ok, so, the Moderate Magician ability. Normally, spells are recovered after an 8 hour rest. This ability lets you get "some" spells back, with a smaller rest.

Let's assume you're a 6th level Red Mage had no spells left and rested for three hours. At the end of the three hours, you recover 6 0 level spells, just as-is, and you can recover 3 1st level spells and you can split them between your Arcane and Divine spells as you see fit.

But, if we assume you had all your fist level spells before you decided to rest, you can instead recover 3 2nd level spells. If you had, say, 2 missing 1st level spells, then you would get those two spells back and one 2nd level spell.

But, if you do the "normal" 8 hour rest, you would get your spells back as standard.