Clarify some details in the comments.
--- a/absyntax/absyntax.def Sun Mar 11 22:21:47 2012 +0100
+++ b/absyntax/absyntax.def Tue Mar 13 12:39:09 2012 +0000
@@ -971,7 +971,10 @@
/* B 2.2 Operators */
/*******************/
/* NOTE: The parameter 'called_fb_declaration' is used to pass data between stage 3 and stage4 (although currently it is not used in stage 4 */
-/* NOTE: The parameter 'deprecated_operation' is used to pass information to print_datatypes_error from fill_candidate class about operation status */
+/* NOTE: The parameter 'deprecated_operation' indicates that the operation, with the specific data types being used, is currently defined
+ * in the standard as being deprecated. This variable is filled in with the correct value in stage 3 (fill_candidate_datatypes_c)
+ * and currently only used in stage 3 (print_datatypes_error_c).
+ */
SYM_REF0(LD_operator_c)
SYM_REF0(LDN_operator_c)
SYM_REF0(ST_operator_c)