Index: trunk/archive/pslib/include/psMetaData.h
===================================================================
--- trunk/archive/pslib/include/psMetaData.h	(revision 257)
+++ trunk/archive/pslib/include/psMetaData.h	(revision 285)
@@ -75,11 +75,20 @@
 /**** Utilities **********************************************************************/
 
+/// Add entry to the end of the metadata set
 psMetaDataItem *psMetaDataAppend(psMetaDataSet *restrict ms, psMetaDataItem *restrict item);
+
+/// delete entry from the metadata set
 psMetaDataItem *psMetaDataRemove(psMetaDataSet *restrict ms, const char *restrict key);
 
+/// reset the iterator to the start of the list
 void psMetaDataSetIterator(psMetaDataSet *ms);
+
+/// get the next entry in the sequence
 psMetaDataItem *psMetaDataGetNext(psMetaDataSet *restrict ms, const char *restrict match);
+
+/// find the metadata with the specified key
 psMetaDataItem *psMetaDataLookup(const psMetaDataSet *restrict ms, const char *restrict key);
 
+/// print metadata item to the specified stream
 void psMetaDataItemPrint(FILE *fd,		// file descriptor to write to
 			 const psMetaDataItem *restrict ms, // item of metadata to print