The source separately presents heavy and light nūn of emphasis in commands. For a singular addressed male, compare قِ with قِيَنَّ (heavy) and قِيَنْ (light).
ConstructionExampleDifference
Simple active orderقِplain imperative
Heavy emphasisقِيَنَّdoubled nūn
Light emphasisقِيَنْsingle final nūn
Passive emphatic orderلِتُوقَيَنَّcommand to be protected
Emphasis interacts with pronoun endings and weak-radical rules. Do not mechanically append one ending to every pronoun or fill the dashes that the book leaves blank.