1 files changed, 7 insertions, 7 deletions
diff --git a/src/libical/icalperiod.h b/src/libical/icalperiod.h
index fb8e3140..4b1034e9 100644
--- a/src/libical/icalperiod.h
+++ b/src/libical/icalperiod.h
@@ -57,7 +57,7 @@ struct icalperiodtype
  * If @a str is not properly formatted, it sets ::icalerrno to
  * ::ICAL_MALFORMEDDATA_ERROR and returns icalperiodtype_null_period().
  *
- * ### Data format
+ * @par Data format
  * There are two ways to specify a duration; either a start time
  * and an end time can be specified, or a start time and a duration.
  * The format for there is as such:
@@ -68,7 +68,7 @@ struct icalperiodtype
  * icaltime_from_string(), and the format for the duration
  * is the same as that used by icaldurationtype_from_string().
  *
- * ### Usage
+ * @par Usage
  * ```c
  * // create icalperiodtype
  * const char *period_string = "20170606T090000/20170607T090000";
@@ -94,7 +94,7 @@ LIBICAL_ICAL_EXPORT struct icalperiodtype icalperiodtype_from_string(const char
  * The string returned by this method is owned by libical and must not be
  * `free()` by the caller.
  *
- * ### Example
+ * @par Example
  * ```c
  * // create icalperiodtype
  * const char *period_string = "20170606T090000/20170607T090000";
@@ -120,7 +120,7 @@ LIBICAL_ICAL_EXPORT const char *icalperiodtype_as_ical_string(struct icalperiodt
  * The string returned by this method is owned by the caller and must be
  * released with the appropriate function after use.
  *
- * ### Example
+ * @par Example
  * ```c
  * // create icalperiodtype
  * const char *period_string = "20170606T090000/20170607T090000";
@@ -139,7 +139,7 @@ LIBICAL_ICAL_EXPORT char *icalperiodtype_as_ical_string_r(struct icalperiodtype
  * @return An ::icalperiodtype representing a null period
  * @sa icalperiodtype_is_null_period()
  *
- * ### Usage
+ * @par Usage
  * ```c
  * // creates null period
  * struct icalperiodtype period = icalperiodtype_null_period();
@@ -158,7 +158,7 @@ LIBICAL_ICAL_EXPORT struct icalperiodtype icalperiodtype_null_period(void);
  * @return 1 if @a p is a null period, 0 otherwise
  * @sa icalperiodtype_null_period()
  *
- * ### Usage
+ * @par Usage
  * ```c
  * // creates null period
  * struct icalperiodtype period = icalperiodtype_null_period();
@@ -174,7 +174,7 @@ LIBICAL_ICAL_EXPORT int icalperiodtype_is_null_period(struct icalperiodtype p);
  * @param p The time period to check
  * @return 1 if @a p is a valid period, 0 otherwise
  *
- * ### Usage
+ * @par Usage
  * ```c
  * // creates null period
  * struct icalperiodtype period = icalperiodtype_null_period();