expr main (in stead of)
let message "Use the modern single word `instead of` to indicate a replacement."
let description "Corrects the archaic or mistaken separation `in stead of` to `instead of` in everyday usage."
let kind "BoundaryError"
let becomes "instead of"
test "He used water in stead of soda." "He used water instead of soda."
allows "He used water instead of soda."