Placing and wearing

Three placement forms position an entity when the story starts: in puts it inside a room or container, on puts it on a supporter, and starts in is how actors (usually the player) name their starting room. Two more lines dress and equip an actor. wears puts a wearable onto an actor so that the actor is wearing it from the start, and carries puts an item into an actor's hands as starting inventory, so the actor holds it but does not wear it.

create the seed packet
  on the potting table

  A paper packet of runner-bean seeds.

create the player
  starts in the Greenhouse
  wears the straw hat
  carries the trowel

  Mud on your boots, dirt under your nails.

Note the disambiguation: on followed by an article is placement (on the potting table); on followed by a bare word opens a behavior clause (on watching it).