Attributes are numerical values that represent some aspect of a character. As the values change, so should the representation of the character. See: Attribute Bonuses
Physical
(STR) Strength - Determines Carrying Capacity, and Accuracy and damage with Strength weapons.
(DEX) Dexterity - Determines Initiative, Accuracy and damage with Dexterity weapons, and Armor Class.
(CON) Constitution - Determines Vitality, and Breath Capacity.
Magical
(ARC) Arcane - Determines Accuracy and Damage with Arcane Spell Attacks, enhances Arcane Spell DC.
(DIV) Divine - Determines Accuracy and Damage with Divine Spell Attacks, enhances Divine Spell DC.
(OCU) Occult - Determines Accuracy and Damage with Occult Spell Attacks, enhances Occult Spell DC.
Mental
(INT) Intelligence - Intelligence is the capacity for logic, understanding, self-awareness, learning, knowledge, reasoning, planning, creativity, critical thinking, problem solving, and memory.
(WIS) Wisdom - Wisdom is the ability to think and act using knowledge, experience, common sense, judgement and insight.
(CHA) Charisma - Charisma is personality or charm that can inspire devotion or action in others.