#+BEGIN_EXAMPLE
* Project                                               :taskjuggler_project:

** Training material
   :PROPERTIES:
   :task_id:  training_material
   :END:
*** Markup Guidelines
    :PROPERTIES:
    :Effort:   2d
    :task_id:  markup
    :END:
*** Workflow Guidelines
    :PROPERTIES:
    :Effort:   2d
    :END:
** Presentation
   :PROPERTIES:
   :Effort:   2d
   :BLOCKER:   markup
   :END:
#+END_EXAMPLE