memory arenas (sort of)

test/index.uce

@@ -29,8 +29,12 @@ RENDER()
 		<pre><?
 			print("Worker PID: ", my_pid, "\n");
 			print("Parent PID: ", parent_pid, " \n");
+			print("Output buffer size: ", context->ob->str().length(), " \n");
 		?></pre>
 		<pre><?= (var_dump(p)) ?></pre>
+		<div><?
+			print("Output buffer size: ", context->ob->str().length(), " \n");
+		?></div>
 	</>
 
 	String test;