On Mon, 18 Oct 2010 22:53:45 +0200, Rainer Thiel <r.thiel@uni-jena.de> wrote:
> 
> 2010/10/18 Eric S Fraga <ucecesf@ucl.ac.uk>:
> > On Mon, 18 Oct 2010 18:17:28 +0200, Rainer Thiel <r.thiel@uni-jena.de> wrote:
> > That expression tells org to repeat that event every 14 weeks.  If you
> > want a repeat entry with an end date, you will need to resort to diary
> > expressions (see diary sexps in section 8.1 of the manual).
> 
> Thank you for your most helpful answer.  I have now been able to
> insert a relevant entry that repeats every week.  I have not been able
> to find a way to insert an end-date, though.  Can you point me to the
> relevant section of the emacs-manual?

In info: Org Mode -> Dates and Times -> Timestamps

third entry on that page mentions that you can use Emacs
calendar/diary sexp diary entries so you can then go to the
appropriate section in the Emacs info manual:

Emacs -> Calendar/Diary -> Advanced Calendar/Diary usage -> Sexp Diary Entries

HTH,
eric