* serv_calendar: added a comment about shared code

diff --git a/citadel/serv_calendar.c b/citadel/serv_calendar.c
index ffe7b87de0250e686adc1e601d0e9cf4742825cf..3b82088443b812514bbc7a31c3a933b78b2b48b9 100644 (file)
--- a/citadel/serv_calendar.c
+++ b/citadel/serv_calendar.c
@@ -825,6 +825,8 @@ icalproperty *ical_ctdl_get_subprop(
 
 /*
  * Check to see if two events overlap.  Returns nonzero if they do.
+ * (This function is used in both Citadel and WebCit.  If you change it in
+ * one place, change it in the other.  Better yet, put it in a library.)
  */
 int ical_ctdl_is_overlap(
                        struct icaltimetype t1start,