[WWcvs] pg: Added comments.

[Mike G. v. a. <we...@ma...>]

Log Message:
-----------
Added comments.

Modified Files:
--------------
    pg/macros:
        PGanswermacros.pl

Revision Data
-------------
Index: PGanswermacros.pl
===================================================================
RCS file: /webwork/cvs/system/pg/macros/PGanswermacros.pl,v
retrieving revision 1.30
retrieving revision 1.31
diff -Lmacros/PGanswermacros.pl -Lmacros/PGanswermacros.pl -u -r1.30 -r1.31
--- macros/PGanswermacros.pl
+++ macros/PGanswermacros.pl
@@ -2657,7 +2657,7 @@
 	#strict_str_cmp( @_ );
 	my $response = shift;  # there should be only one item.
 	warn "Multiple choices -- this should not happen with radio buttons. Have
-	you used checkboxes perhaps?" if ref($response);
+	you used checkboxes perhaps?" if ref($response); #triggered if an ARRAY is passed
 	str_cmp($response);
 }