&gt; &gt; second half, and when one of them is present the other isn't.
&gt; &gt;
&gt; &gt; Here are more explanatory docu-strings, but they are more like
&gt; &gt; mini-essays. Is this the kind of thing you had in mind?
&gt; &gt;
&gt; &gt; (documentation Continuant " Intuitively, an object-like thing as
&gt; &gt; opposed to an event-like thing; something that endures rather than
&gt; &gt; something that happens. A continuant is thought of as continuing
&gt; &gt; through time, but at any particular time is 