chapter AFP

session "Free-Groups" = HOL +
  options [timeout = 600]
  sessions
    "HOL-Computational_Algebra"
    "HOL-Algebra"
    "HOL-Cardinals"
    Applicative_Lifting
  theories
    FreeGroups
    Isomorphisms
    PingPongLemma
  document_files
    "root.tex"
