use Module VERSION LIST
    use Module VERSION
    use Module LIST
    use Module
    use VERSION
            Imports some semantics into the current package from the named
            module, generally by aliasing certain subroutine or variable
            names into your package. It is exactly equivalent to

                BEGIN { require Module; import Module LIST; }

            except that Module *must* be a bareword.

##</code><code>##

            If EXPR is a bareword, the require assumes a ".pm" extension and
            replaces "::" with "/" in the filename for you, to make it easy
            to load standard modules. This form of loading of modules does
            not risk altering your namespace.

            In other words, if you try this:

                    require Foo::Bar;    # a splendid bareword

            The require function will actually look for the "Foo/Bar.pm"
            file in the directories specified in the @INC array.

            But if you try this:

                    $class = 'Foo::Bar';
                    require $class;      # $class is not a bareword
                #or
                    require "Foo::Bar";  # not a bareword because of the ""

            The require function will look for the "Foo::Bar" file in the
            @INC array and will complain about not finding "Foo::Bar" there.
            In this case you can do:

                    eval "require $class";