What do TP, AP, JP, and SP stand for?

•TP: Technical Points
TP is required to activate different abilities in battle. TP does not refill as you attack.

• AP: Attack Points
AP is required to perform different abilities and Limit Bursts in battle. AP refills as you attack. Attacking from the side or from behind, hitting an enemy's weak points, getting a Critical Hit, or knocking out an enemy will gain you more AP.
*Picking up Crystals during battle can also replenish AP.

• JP: Job Points
JP is required to enhance and unlock unit abilities. You can acquire JP by completing Quests or via the Guild Barracks.

• SP: Skill Points
SP is required to enhance and unlock an esper's abilities. You can acquire SP whenever one of your espers levels up.