>>> But what about the other ploys to get us reading the
text in a particular sequence? For example, if the commentary on Canto I
tells us to see Canto III lines 6-9 should we take a peak? If we do will
we be obliged ("see ... commentary") or at least tempted to read the
commentary on Canto II lines 6-9 and so on?<<<
We should always follow the instructions of the commentary.