spellLevels: {
    "0": "Cantrip/Orison";
    "1": "1st Level";
    "2": "2nd Level";
    "3": "3rd Level";
    "4": "4th Level";
    "5": "5th Level";
    "6": "6th Level";
    "7": "7th Level";
    "8": "8th Level";
    "9": "9th Level";
} = ...

Spell levels