=over =item %^H X<%^H> The C<%^H> hash provides the same scoping semantic as C<$^H>. This makes it useful for implementation of lexically scoped pragmas. See L. When putting items into C<%^H>, in order to avoid conflicting with other users of the hash there is a convention regarding which keys to use. A module should use only keys that begin with the module's name (the name of its main package) and a "/" character. For example, a module C should use keys such as C. This variable was added in Perl v5.6.0. =back