my
my - declare and assign a local variable (lexical scoping)
my EXPR
A ``my'' declares the listed variables to be local (lexically) to the
enclosing block, subroutine, 
eval
, or 
do/require/use
'd file.  If
more than one value is listed, the list must be placed in parens.  See
``Private Variables via 
my()
'' for details.