--- /dev/null
+{{Support for Apache's mod_expires}}
+
+extern type mime_type;
+
+extern type interval_base;
+extern val access : interval_base;
+extern val modification : interval_base;
+
+extern type interval;
+extern val years : interval;
+extern val months : interval;
+extern val weeks : interval;
+extern val days : interval;
+extern val hours : interval;
+extern val minutes : interval;
+extern val seconds : interval;
+
+extern val expiresByType : mime_type -> interval_base -> int -> interval -> [^Vhost];
+{{See <a href="http://httpd.apache.org/docs/2.0/mod/mod_expires.html#expiresbytype">
+ Apache documentation</a>.}}