diff --git a/inc/RRule.php b/inc/RRule.php
new file mode 100644
index 00000000..0fd87304
--- /dev/null
+++ b/inc/RRule.php
@@ -0,0 +1,135 @@
+
+* @copyright Catalyst .Net Ltd
+* @license http://gnu.org/copyleft/gpl.html GNU GPL v2
+*/
+
+/**
+* A Class for handling dates in iCalendar format. We do make the simplifying assumption
+* that all date handling in here is normalised to GMT. One day we might provide some
+* functions to do that, but for now it is done externally.
+*
+* @package awl
+*/
+class iCalDate {
+ /**#@+
+ * @access private
+ */
+
+ /** Text version */
+ var $_text;
+
+ /** Epoch version */
+ var $_epoch;
+
+ /** Fragmented parts */
+ var $_yy;
+ var $_mm;
+ var $_dd;
+ var $_hh;
+ var $_mm;
+ var $_ss;
+
+ /**#@-*/
+
+ /**
+ * The constructor takes either a text string formatted as an iCalendar date, or
+ * epoch seconds.
+ */
+ function iCalDate( $input ) {
+ if ( preg_match( '/^\d{8}T\d{6}Z/', $input ) ) {
+ $this->SetICalDate($input);
+ }
+ else if ( intval($input) == 0 ) {
+ return;
+ }
+ else {
+ $this->SetEpochDate($input);
+ }
+ }
+
+
+ /**
+ * Set the date from a text string
+ */
+ function SetICalDate( $input ) {
+ $this->_text = $input;
+ $this->_PartsFromText();
+ $this->_EpochFromParts();
+ }
+
+
+ /**
+ * Set the date from an epoch
+ */
+ function SetEpochDate( $input ) {
+ $this->_epoch = intval($input);
+ $this->_TextFromEpoch();
+ $this->_PartsFromText();
+ }
+
+
+ /**
+ * Given an epoch date, convert it to text
+ */
+ function _TextFromEpoch() {
+ $this->_text = gmdate('Ymd\THis\Z', $this->_epoch );
+ }
+
+
+ /**
+ * Given an epoch date, convert it to text
+ */
+ function _PartsFromText() {
+ $this->_yy = substr($this->_text,0,4);
+ $this->_mo = substr($this->_text,4,2);
+ $this->_dd = substr($this->_text,6,2);
+ $this->_hh = substr($this->_text,9,2);
+ $this->_mi = substr($this->_text,11,2);
+ $this->_ss = substr($this->_text,13,2);
+ }
+
+
+ /**
+ * Given a text date, convert it to an epoch
+ */
+ function _EpochFromParts() {
+ $this->_epoch = gmmktime ( $this->_hh, $this->_mi, $this->_ss, $this->_mo, $this->_dd, $this->_yy );
+ }
+
+
+}
+
+
+/**
+* A Class for handling Events on a calendar
+*
+* @package awl
+*/
+class RRule {
+ /**#@+
+ * @access private
+ */
+
+ /** The first instance */
+ var $_first;
+
+ /**#@-*/
+
+ /**
+ * The constructor takes a start & end date and an RRULE definition. All of these
+ * follow the iCalendar standard.
+ */
+ function RRule( $start, $end, $rrule ) {
+ }
+
+ function GetNext( $after = false ) {
+ }
+
+}
+?>
\ No newline at end of file
diff --git a/rscds.webprj b/rscds.webprj
index d30472c7..d8499174 100644
--- a/rscds.webprj
+++ b/rscds.webprj
@@ -200,8 +200,6 @@