.. dfhack-tool::
    :summary: todo.
    :tags: dev

This triggers dfhack commands when reaction products are produced, once per product. Usage:

-clear
    unregister all reaction hooks
-reactionName name
    specify the name of the reaction
-command [ commandStrs ]
    specify the command to be run on the target(s)
    special args
        \\WORKER_ID
        \\REACTION
        \\BUILDING_ID
        \\LOCATION
        \\INPUT_ITEMS
        \\OUTPUT_ITEMS
        \\anything -> \anything
        anything -> anything