- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+/** @file lib/cache.h
+ * @brief Object caching
+ *
+ * There is a single cache for the whole process. Objects of different types
+ * are distinguished. Objects might be thrown out of the cache at any point.