chapter AFP

session Projective_Geometry = HOL +
  options [timeout=300]
  theories
    Pappus_Desargues
    Desargues_2D
    Desargues_3D
    Projective_Space_Axioms
    Higher_Projective_Space_Axioms
  document_files
    "root.tex"
    "root.bib"
