session "PIP" = HOL +
  theories [document = false]
	"Implementation" 
	"Correctness"

session "Slides2" in "Slides" = PIP +
  options [document_variants="slides2"]
  theories [document = false]
    "~~/src/HOL/Library/LaTeXsugar"
  theories[document = true]
    "Slides2"
  files
    "document/build"

session "Slides3" in "Slides" = PIP +
  options [document = pdf, browser_info = false, document_output = "..", document_variants="slides3"]
  theories [document = false]
    "~~/src/HOL/Library/LaTeXsugar"
  theories[document = true, show_question_marks = false]
    "Slides3"
  files
    "document/build"

session "Slides4" in "Slides" = PIP +
  options [document = pdf, browser_info = false, document_output = "..",
document_variants="slides4"]
  theories [document = false]
    "~~/src/HOL/Library/LaTeXsugar"
  theories[document = true, show_question_marks = false]
    "Slides4"
  files
    "document/build"


session Journal in "Journal" = PIP +
  options [document = pdf, document_output = "..", document_variants="journal"]
  theories 
    "~~/src/HOL/Library/LaTeXsugar"
    "Paper"
  document_files
    "root.bib"
    "root.tex"