A ds_queue is somewhat similar to a ds_stack but it works on a first-in first-out (FIFO) basis. The value that is put into the queue first is also the first to be removed from it. You can think of it like a queue in a shop for paying, where the person that is first in the queue pays first and then leaves the shop. Queues are typically used to store actions or behaviours (in the form of scripts, for example) that still need to be done by an instance but there are many other uses.

The following functions exist that deal with ds_queues:

1. ds_queue_create
   
2. ds_queue_destroy
   
3. ds_queue_clear
   
4. ds_queue_empty
   
5. ds_queue_size
   
6. ds_queue_dequeue
   
7. ds_queue_enqueue
   
8. ds_queue_head
   
9. ds_queue_tail
   
10. ds_queue_copy
    
11. ds_queue_read
    
12. ds_queue_write