+=head1 FUNCTIONS
+
+=head2 C<msg>
+
+ my $msg = msg($object, $method, $file, $line);
+
+Returns the default error message that C<indirect> generates when an indirect method call is reported.
+
+=cut
+
+sub msg {
+ my $obj = $_[0];
+
+ join ' ', "Indirect call of method \"$_[1]\" on",
+ ($obj =~ /^\s*\{/ ? "a block" : "object \"$obj\""),
+ "at $_[2] line $_[3].\n";
+};
+
+=head1 CONSTANTS
+
+=head2 C<I_THREADSAFE>
+
+True iff the module could have been built with thread-safety features enabled.
+
+=head2 C<I_FORKSAFE>
+
+True iff this module could have been built with fork-safety features enabled.
+This will always be true except on Windows where it's false for perl 5.10.0 and below .
+
+=head1 DIAGNOSTICS
+
+=head2 C<Indirect call of method "%s" on object "%s" at %s line %d.>
+
+The default warning/exception message thrown when an indirect method call on an object is found.
+
+=head2 C<Indirect call of method "%s" on a block at %s line %d.>
+
+The default warning/exception message thrown when an indirect method call on a block is found.
+
+=head1 ENVIRONMENT
+
+=head2 C<PERL_INDIRECT_PM_DISABLE>
+
+If this environment variable is set to true when the pragma is used for the first time, the XS code won't be loaded and, although the C<'indirect'> lexical hint will be set to true in the scope of use, the pragma itself won't do anything.
+In this case, the pragma will always be considered to be thread-safe, and as such L</I_THREADSAFE> will be true.
+This is useful for disabling C<indirect> in production environments.
+
+Note that clearing this variable after C<indirect> was loaded has no effect.
+If you want to re-enable the pragma later, you also need to reload it by deleting the C<'indirect.pm'> entry from C<%INC>.
+