[O] Customizing "Easy Templates"?

[Michael Hannon]

Greetings.  I just came across the "Easy Templates" feature of Org-mode:

    http://orgmode.org/manual/Easy-Templates.html

In particular, using:

    <s<TAB>

to generate:

    #+begin_src 

    #+end_src

is a real time-saver for me.

One thing that would improve this feature for me: I like to keep source code in 
lower case and directives such as BEGIN_SRC in upper case.  (This must stem 
from 
some ancient convention I used in C at one time.)  I can't figure out how to 
customize the text of these templates.  Can anybody point me in the right 
direction?

Thanks,

-- Mike