To run R:

1. Queue an element task on the embed task source to perform the following steps:

   1. Fire an event named queued.

2. Queue an element task on the media element event task source to perform the following steps:

   1. Fire an event named queued.

3. Queue an element task on the canvas blob serialization task source to perform the following steps:

   1. Fire an event named queued.

4. Queue an element task on the speculation rules task source to perform the following steps:

   1. Fire an event named queued.

5. Queue an element task on the JavaScript engine task source to perform the following steps:

   1. Fire an event named queued.

6. Queue an element task on the microtask task source to perform the following steps:

   1. Fire an event named queued.

7. Queue an element task on the DOM manipulation task source to perform the following steps:

   1. Fire an event named queued.

8. Queue an element task on the user interaction task source to perform the following steps:

   1. Fire an event named queued.

9. Queue an element task on the networking task source to perform the following steps:

   1. Fire an event named queued.

10. Queue an element task on the navigation and traversal task source to perform the following steps:

    1. Fire an event named queued.

11. Queue an element task on the rendering task source to perform the following steps:

    1. Fire an event named queued.

12. Queue an element task on the timer task source to perform the following steps:

    1. Fire an event named queued.

13. Queue an element task on the bitmap task source to perform the following steps:

    1. Fire an event named queued.

14. Queue an element task on the remote event task source to perform the following steps:

    1. Fire an event named queued.

15. Queue an element task on the posted message task source to perform the following steps:

    1. Fire an event named queued.

16. Queue an element task on the port message queue to perform the following steps:

    1. Fire an event named queued.

17. Queue an element task on the unshipped port message queue to perform the following steps:

    1. Fire an event named queued.

18. Queue an element task on source to perform the following steps:

    1. Fire an event named queued.