OK, the first is somewhat unclear. How does the following patch look to you?

--- perlop.pod.old      Tue Mar 29 01:27:36 2005
+++ perlop.pod  Tue May 10 09:32:16 2005
@@ -191,7 +191,7 @@
 concatenated with the identifier is returned.  Otherwise, if the stri
+ng
 starts with a plus or minus, a string starting with the opposite sign
 is returned.  One effect of these rules is that -bareword is equivale
+nt
-to "-bareword".
+to the string "-bareword".

 Unary "~" performs bitwise negation, i.e., 1's complement.  For
 example, C<0666 & ~027> is 0640.  (See also L<Integer Arithmetic> and
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As for the range operator question, actual operators are marked C<op> through perlop.pod. I'd suggest searching for that alone to see where its used.