Function column_words 

fn column_words(
    columns: &[Column],
    nothing: bool,
    gated: Option<&Gated>,
) -> Vec<String>

The matrix’s columns as the log says them: their ids (“leisure”, “slot”), Free time’s “Nothing at all” when it holds (“free (nothing at all)”), and do-not-disturb with what holds it (“dnd (focus session)”, “dnd (switch)”).