Index: data.h
===================================================================
--- data.h	(revision 25860)
+++ data.h	(revision 25861)
@@ -226,9 +226,12 @@
 /* Clear the given dyflag bit from all objects under data */
 void pcb_data_dynflag_clear(pcb_data_t *data, pcb_dynf_t dynf);
 
-
+/* Convert name to data, return NULL if not found */
 pcb_data_t *pcb_data_by_name(pcb_board_t *pcb, const char **name);
 
+/* Convert data to name; either returns a static srting or fills in
+   buf with dynamic data and returns buf. Buf needs to be at least 16
+   bytes long. Returns NULL if data is not the pcb or a buffer. */
 const char *pcb_data_to_name(pcb_board_t *pcb, pcb_data_t *data, char *buf, int buf_len);
 
 #endif