l>


<h2>Empire.Persistent</h2>

<p>
This class is meant as a high-level interface for a 4k memory area that is provided by the game, and which is subject of automatic backup and restore. Programming this class has to happen on a somewhat lower level than with the other classes. 
</p>

<p>
The most important fact is that only the memory area itself is being backed up, not objects that are referenced from it. That results in an important distinction. On one side, there are data items which are allowed within