+ ;; ‘s’ ‘#+BEGIN_SRC ... #+END_SRC’
+ ;; ‘e’ ‘#+BEGIN_EXAMPLE ... #+END_EXAMPLE’
+ ;; ‘q’ ‘#+BEGIN_QUOTE ... #+END_QUOTE’
+ ;; ‘v’ ‘#+BEGIN_VERSE ... #+END_VERSE’
+ ;; ‘c’ ‘#+BEGIN_CENTER ... #+END_CENTER’
+ ;; ‘l’ ‘#+BEGIN_LaTeX ... #+END_LaTeX’
+ ;; ‘L’ ‘#+LaTeX:’
+ ;; ‘h’ ‘#+BEGIN_HTML ... #+END_HTML’
+ ;; ‘H’ ‘#+HTML:’
+ ;; ‘a’ ‘#+BEGIN_ASCII ... #+END_ASCII’
+ ;; ‘A’ ‘#+ASCII:’
+ ;; ‘i’ ‘#+INDEX:’ line
+ ;; ‘I’ ‘#+INCLUDE:’ line
+
+