-if you have set up the include and libdir using configure you can install
-the library and its headers by 'make install'
+If you have set up the include and libdir using configure you can install
+the library and its headers by 'make install'. This is encouraged if the
+library is hooked up to any other modules, e.g., a front end. Only the
+external headers are guaranteed to remain stable, the implementation might
+change.