-FIRM_API int get_Sync_n_preds(const ir_node *node);
-FIRM_API ir_node *get_Sync_pred(const ir_node *node, int pos);
-FIRM_API void set_Sync_pred(ir_node *node, int pos, ir_node *pred);
-FIRM_API void add_Sync_pred(ir_node *node, ir_node *pred);
+/** Returns number of predecessors of Sync node @p node. */
+FIRM_API int get_Sync_n_preds(const ir_node *node);
+/** Returns predecessor number @p pos of Sync node @p node. */
+FIRM_API ir_node *get_Sync_pred(const ir_node *node, int pos);
+/** Sets value @p pred as predecessor number @p pos of Sync node @p node. */
+FIRM_API void set_Sync_pred(ir_node *node, int pos, ir_node *pred);
+/** Adds @p pred to predecessor list of Sync node @p node. */
+FIRM_API void add_Sync_pred(ir_node *node, ir_node *pred);
+/** Removes predecessor i from Sync n */
+FIRM_API void del_Sync_n(ir_node *n, int i);
+
+/** @} */