[Orgmode] Adding a timestamp after refiling

[Charles Cave]

I use a task planning methodology From Mark Forster called
"Autofocus" (http://www.markforster.net/autofocus-index/)

Part of the workflow is rewriting a task at the end of the
list of things to do - in orgmode terms - refiling a task.

Would it be possible to add functionality to add a date/time stamp
when a task is refiled?  I have looked at the Tracking
TODO state changes documentation in section 5.3.2 and this style
of logging would be good.

I am not a Lisp programmer but I have heard the term "hook" in regard
to org-mode, so I assume there is some point in the code for each
function to add extra functionality before or after a function is
done? For example, after executing the org-refile command, add a date
time stamp to the heading.

Thanks
Charles