List of specific abbreviations CAT UN Committee Against Torture CPT European Committee for the Prevention of Torture and Inhuman or Degrading Treatment or Punishment ETS European Treaty Series NPM National Preventive Mechanism OP-CAT Optional Protocol to the Convention against Torture and other Cruel, Inhuman or Degrading Treatment or Punishment SPT Subcommittee on the Prevention of Torture and other Cruel, Inhuman or Degrading Treatment or Punishment 11