It is possible to hide parts of an article by using a conditional directive. Consider the following

Hello [mosif user=admin]administrator[else]everbody[endif]

If you create an article containing the above, only the administrator will see "Hello administrator", everybody else will see "Hello everybody".

• The above is deliberately wrong to allow you to see the construction. You need to replace the square brackets [] with braces {}

• See the documentation for a full explanation (examples are at the bottom)
  

Ben