Lesson 1 · What a hook is · step 2 of 1001Read02What a hook is03Task 104Task 205Task 306A hook or a line in the rules file07Task 408Task 509Recap10TakeawayReadWhat a hook isLog in to read this lesson. A free account opens the introductory chapter.←Why a rule that must hold belongs in a script, not in a sentenceWhich one runs every time→