documentation Abstract  "Pure information as distinguished from any 
&gt; particular encoding
&gt; &gt;  of the information in a physical medium.")
&gt; &gt;
&gt; &gt; (documentation Physical  "An entity that has a location in space-time.")
&gt; &gt;
&gt; &gt; (documentation Actuality  "A physical entity (P) whose existence is
&gt; &gt;  independent (I) of any other entity.  As instances, the category
&gt; &gt;  Actuality includes both objects and processes.  The term is taken
&gt; &gt;  from Whitehead, who