Action Category 09

Begin using an item

• actor_id: mob id of item user
• category: 9
• param: 24931 (initiation) or 28787 (interruption)
• targets
  • id: mob id the item is used on
  • actions
    • param: item id
    • message: frequently 28, though many are possible
    • reaction: commonly 16
    • unknown: always 0?
    • additional effect information: Sometimes appears for these messages, but just mimics messages received by other people on your server. SE simply doesn't re-initialize the values to 0 when sending out information.
• unknown: Determines the animation in some way.
• recast: Seems to encode the delay in seconds between using the item until you can use an item/job ability/weapon skill/spell.