Sorry if this has been sent more than once. I was trying to reply from gnus, and it isn't clear that happened.

The code block in that example is also missing a closing parenthesis.

this post reminded me of this cool feature of source blocks, so I tried
it out. The code block itself does not seem to run, even after fixing
the closing parenthesis.

#+BEGIN_SRC emacs-lisp -r
(save-excursion                  (ref:sc)
  (goto-char (point-min)))       (ref:jump)
#+END_SRC

In line [[(sc)]] we remember the current position.  [[(jump)][Line
(jump)]] jumps to point-min.



I get:

save-excursion: Symbol's function definition is void: ref:sc

unless I put a ; (comment) in front of (ref:sc) and (ref:jump). Then the
block runs, but still does not export correctly.

When I export this to a pdf file, the ref: is removed from the
references, but (sc) and (jump) remain in the code block, and as
Jambunathan noted, the links in the text are not replaced by line numbers.

I hope that helps track down the problem!

Thanks.