Rich Gray provided good feedback and we now clarify that you can in fact
stop a multi transfer at any point you like by removing the easy handle.
If you're using the multi interface, you can also stop a transfer by
removing the particular easy handle from the multi stack at any moment you
- think the transfer is done.
+ think the transfer is done or when you wish to abort the transfer.
5.14 Using C++ non-static functions for callbacks?