perldoc -f my
my EXPR
my TYPE EXPR
my EXPR : ATTRS
my TYPE EXPR : ATTRS
        A "my" declares the listed variables to be local (lexically) t
+o
        the enclosing block, file, or "eval". If more than one value i
+s
        listed, the list must be placed in parentheses.

        The exact semantics and interface of TYPE and ATTRS are still
        evolving. TYPE is currently bound to the use of "fields" pragm
+a,
        and attributes are handled using the "attributes" pragma, or
        starting from Perl 5.8.0 also via the "Attribute::Handlers"
        module. See "Private Variables via my()" in perlsub for detail
+s,
        and fields, attributes, and Attribute::Handlers.
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