I remember I especially liked to be able to evaluate sexp in place 
in the eintr manual, that is fitting so well the interpreted 
nature of elisp, but here the situation is out of my mind :
 - 1. the norm seems to *not* use the column 0 to declare top 
 level sexp in Info manuals even if 
 `open-paren-in-column-0-is-defun-start' is set to t.
 - 2. there is many opened sexp given as exemple, which will 
 confuse the syntaxe tree.

Have a nice day, or, night, I don't know.
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