chapter AFP

session Chomsky_Schuetzenberger = Context_Free_Grammar +
  options [timeout = 600]
  sessions
    Finite_Automata_HF
    Dyck_Language
    Context_Free_Grammar
  theories [document = false]
    Dyck_Language_Syms
  theories
    Chomsky_Schuetzenberger
  document_files
    "root.tex"
    "root.bib"
