// Each line is a separate usage. // Blank lines are allowed. // Usages may have spaces in their names. // Leading and trailing spaces on a line get ignored. // The order is the order in which things appear in Radiant. // is used to add a separator line in Radiant. case tools interior wall interior trim exterior wall exterior trim ceiling roof ground floor road door window furniture trench damage grunge decorative fence poster sign flag background foliage rock liquid sky barrel crate box