sidhekin@blackbox[23:22:41]~$ perl -MDevel::Peek -le 'Dump(.0)'
SV = NV(0x816e490) at 0x814dce4
  REFCNT = 1
  FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK)
  NV = 0
sidhekin@blackbox[23:22:51]~$ perl -MDevel::Peek -le 'Dump(-.0)'
SV = NV(0x816e4a0) at 0x814dd20
  REFCNT = 1
  FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK)
  NV = -0
sidhekin@blackbox[23:22:53]~$