From Classical to Hierarchical: benchmarks for the HTN Track of the
  International Planning Competition
  In this short paper, we outline nine classical benchmarks submitted to the
first hierarchical planning track of the International Planning competition in
2020. All of these benchmarks are based on the HDDL language. The choice of the
benchmarks was based on a questionnaire sent to the HTN community. They are the
following: Barman, Childsnack, Rover, Satellite, Blocksworld, Depots, Gripper,
and Hiking. In the rest of the paper we give a short description of these
benchmarks. All are totally ordered.
