Function toggle_item 

pub fn toggle_item(
    group_key: &str,
    value: impl Display,
    label: impl Into<String>,
    selected: bool,
) -> El

A single item inside a toggle group. Apps usually let toggle_group / toggle_group_multi build these from (value, label) pairs; reach for toggle_item directly when composing the row by hand (e.g. mixing in icons or badges per option).

group_key is the parent group’s key — the routed key on the item is {group_key}:toggle:{value} (see toggle_option_key). selected paints the pressed surface.