#+TITLE:     Export a subtree
#+AUTHOR:    Torsten Wagner
#+EMAIL:     
#+DESCRIPTION:
#+KEYWORDS:
#+LANGUAGE:  en
#+OPTIONS:   H:3 num:t toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
#+OPTIONS:   TeX:t LaTeX:t skip:nil d:nil todo:t pri:nil tags:not-in-toc
#+INFOJS_OPT: view:nil toc:nil ltoc:t mouse:underline buttons:0 path:http://orgmode.org/org-info.js
#+EXPORT_SELECT_TAGS: export
#+EXPORT_EXCLUDE_TAGS: noexport
#+LINK_UP:   
#+LINK_HOME: 
#+XSLT:

#+startup: beamer
#+LaTeX_CLASS: beamer
#+LaTeX_CLASS_OPTIONS: [bigger]
#+BEAMER_FRAME_LEVEL: 2
#+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %4BEAMER_col(Col) %10BEAMER_extra(Extra)

* lecture 1
** start lecture 1
** slide 1
** slide 2
** slide 3
** end lecture 1
* lecture 2
** start lecture 2
** slide 1
** slide 2
*** Item 1
*** Item 2
*** Item 3
** slide 3
** end lecture 2
* lecture 2
** start lecture 3
** slide 1
** slide 2
** slide 3
** end lecture 3