Index: /trunk/archive/pslib/include/psPosition.h
===================================================================
--- /trunk/archive/pslib/include/psPosition.h	(revision 281)
+++ /trunk/archive/pslib/include/psPosition.h	(revision 282)
@@ -63,6 +63,6 @@
 psGetOffset(const psCoord *restrict position1, //!< Position 1
 	    const psCoord *restrict position2, //!< Position 2
-	    char *system)
-;
+	    const char *type		//!< Type of offset: Linear, Spherical/Arcsec, Spherical/Degreees etc
+    );
 
 /** Apply an offset to a position */
@@ -70,6 +70,6 @@
 psApplyOffset(const psCoord *restrict position, //!< Position
 	      const psCoord *restrict offset, //!< Offset
-	      char *system)
-;
+	      const char *type		//!< Type of offset: Linear, Spherical/Arcsec, Spherical/Degreees etc
+    );
 
 /* Positions of well-known objects */