Index: operation.h
===================================================================
--- operation.h	(revision 2705)
+++ operation.h	(revision 2706)
@@ -74,7 +74,7 @@
    can be used in a transformed group breakup to get all ex-member objects stay in place. */
 void csch_inst2spec(csch_sheet_t *sheet, csch_chdr_t *obj, const csch_chdr_t *inst_from, int undoable);
 
-/* Undoably rotate object by da radians around rcx;rcy; the original spec is moved */
+/* Undoably rotate object by da degrees around rcx;rcy; the original spec is moved */
 void csch_rotate(csch_sheet_t *sheet, csch_chdr_t *obj, csch_coord_t rcx, csch_coord_t rcy, double da, int undoable);
 
 /* Same as rotate but works in n*90 degree angles and guarantees to avoid