title: Where i can find Oberon modules for Ubuntu 16.04?
body: <p>I read Niklaus Wirth book and want try examples from this book.</p>
  
  <p>And i try run simple Oberon hello world: <a href="http://groups.engin.umd.umich.edu/CIS/course.des/cis400/oberon/hworld.html#source" rel="nofollow noreferrer">http://groups.engin.umd.umich.edu/CIS/course.des/cis400/oberon/hworld.html#source</a></p>
  
  <p>But get error: </p>
  
  <pre><code>$ obc -o hello Hello.m
  "Hello.m", line 4: the interface file for 'Oberon' cannot be found
  &gt;          IMPORT Oberon, Texts;
  &gt;                 ^^^^^^
  
  "Hello.m", line 4: the interface file for 'Texts' cannot be found
  &gt;          IMPORT Oberon, Texts;
  &gt;                         ^^^^^
  </code></pre>
  
  <p>Clearly i should install required modules. Quick googling don't give me answer. So where i can find this modules?</p>
  
  <p>I install Oberon from this deb <a href="http://spivey.oriel.ox.ac.uk/corner/Installing_OBC_release_3.0" rel="nofollow noreferrer">http://spivey.oriel.ox.ac.uk/corner/Installing_OBC_release_3.0</a></p>