Remove one extra mention to MGf_COPY

Also explicitely state from which perl versions the MGf_* constants are
available.

diff --git a/lib/Variable/Magic.pm b/lib/Variable/Magic.pm
index 1aa0080dec81c4ecd8f80513686fe9920ce0773c..29b8fa118cdf054eca0bfd12a37f83747970568b 100644 (file)
--- a/lib/Variable/Magic.pm
+++ b/lib/Variable/Magic.pm
@@ -143,7 +143,6 @@ This magic is called when an object is destroyed as the result of the variable g
 C<copy>
 
 This magic only applies to tied arrays and hashes, and fires when you try to access or change their elements.
-It is available on your perl if and only if C<MGf_COPY> is true.
 
 =item *
 
@@ -407,19 +406,22 @@ This function returns true on success, C<0> when no magic represented by C<$wiz>
 =head2 C<MGf_COPY>
 
 Evaluates to true if and only if the 'copy' magic is available.
+This is the case for perl 5.7.3 and greater, which is ensured by the requirements of this module.
 
 =head2 C<MGf_DUP>
 
 Evaluates to true if and only if the 'dup' magic is available.
+This is the case for perl 5.7.3 and greater, which is ensured by the requirements of this module.
 
 =head2 C<MGf_LOCAL>
 
 Evaluates to true if and only if the 'local' magic is available.
+This is the case for perl 5.9.3 and greater.
 
 =head2 C<VMG_UVAR>
 
 When this constant is true, you can use the C<fetch,store,exists,delete> callbacks on hashes.
-Initial VMG_UVAR capability was introduced in perl 5.9.5, with a fully functional implementation shipped with perl 5.10.0.
+Initial L</VMG_UVAR> capability was introduced in perl 5.9.5, with a fully functional implementation shipped with perl 5.10.0.
 
 =head2 C<VMG_COMPAT_SCALAR_LENGTH_NOLEN>