In a fantasy film, sometimes it’s important to give a reader a sense of how the characters’ magic, etc. functions within the world of the story (especially if that world is different from our own). These Hocus Pocus descriptions tell us about each witch’s evilness and power.

Note the use of different witch archetypes (or stereotypes?) in these descriptions. There’s the all-powerful, desperate for youth/beauty witch, the Hansel and Gretel-style hungry witch and the unhinged, torturer witch. The writers meld these witch stock characters with comedy stock characters to form a Three Stooges-like sisterhood of funny witches. 

The descriptions might seem a little robust for a feature script, but the writers give us all the information we need to understand the rest of the script.