DB<13> ${*STDIN}{goo} = 'ber'

  DB<14> x \%{*STDIN}
0  HASH(0x9a7d878)
   'goo' => 'ber'
*  DB<15> x \%STDIN
0  HASH(0x9a7d878)
   'goo' => 'ber'
*  DB<17> x *STDIN
0  *main::STDIN
*  DB<18> x *STDIN{HASH}
0  HASH(0x9a7d878)
   'goo' => 'ber'
*  DB<19> x *STDIN{IO}
0  IO::Handle=IO(0x97a5980)