org-structure-template-alist

org-structure-template-alist is a variable defined in `org.el'.
Its value is shown below.

Documentation:
Structure completion elements.
This is a list of abbreviation keys and values. The value gets inserted
if you type `<' followed by the key and then press the completion key,
usually `M-TAB'. %file will be replaced by a file name after prompting
for the file using completion. The cursor will be placed at the position
of the `?` in the template.
There are two templates for each key, the first uses the original Org syntax,
the second uses Emacs Muse-like syntax tags. These Muse-like tags become
the default when the /org-mtags.el/ module has been loaded. See also the
variable `org-mtags-prefer-muse-templates'.

You can customize this variable.

Value:

(("s" "#+BEGIN_SRC ?\n\n#+END_SRC" "\n\n")
 ("e" "#+BEGIN_EXAMPLE\n?\n#+END_EXAMPLE" "\n?\n")
 ("q" "#+BEGIN_QUOTE\n?\n#+END_QUOTE" "\n?\n")
 ("v" "#+BEGIN_VERSE\n?\n#+END_VERSE" "\n?\n")
 ("V" "#+BEGIN_VERBATIM\n?\n#+END_VERBATIM" "\n?\n")
 ("c" "#+BEGIN_CENTER\n?\n#+END_CENTER" "\n?\n")
 ("l" "#+BEGIN_LaTeX\n?\n#+END_LaTeX" "\n?\n")
 ("L" "#+LaTeX: " "?")
 ("h" "#+BEGIN_HTML\n?\n#+END_HTML" "\n?\n")
 ("H" "#+HTML: " "?")
 ("a" "#+BEGIN_ASCII\n?\n#+END_ASCII" "")
 ("A" "#+ASCII: " "")
 ("i" "#+INDEX: ?" "#+INDEX: ?")
 ("I" "#+INCLUDE: %file ?" ""))