# Basic Usage

Creates an `XWUIGameSpellbook` in `#app` with empty `data` and `conf_comp`, so it starts with no `spells` and the `showCost`, `showCooldown`, and `showSchool` defaults all on. Populate `spells` (each `{ id, name, icon, school, cost, cooldown, level, learned, description }`) so the school tabs, icon grid, and detail panel render.