diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..22d0050
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+output
+
diff --git a/Core_DOM/Core_DOM/ROOT b/Core_DOM/Core_DOM/ROOT
index 7cceaab..65fc181 100644
--- a/Core_DOM/Core_DOM/ROOT
+++ b/Core_DOM/Core_DOM/ROOT
@@ -1,7 +1,7 @@
 chapter AFP
 
 session "Core_DOM" (AFP) = "HOL-Library" + 
-  options [timeout = 1200]
+  options [timeout = 1200, document = pdf, document_variants="document:outline=/proof,/ML",document_output=output]
   directories
     "common"
     "common/classes"
@@ -18,3 +18,4 @@ session "Core_DOM" (AFP) = "HOL-Library" +
   document_files (in "document")
     "root.tex"
     "root.bib"
+
diff --git a/Core_DOM/Core_SC_DOM/ROOT b/Core_DOM/Core_SC_DOM/ROOT
index 4b337e3..b9ba03f 100644
--- a/Core_DOM/Core_SC_DOM/ROOT
+++ b/Core_DOM/Core_SC_DOM/ROOT
@@ -1,7 +1,7 @@
 chapter AFP
 
 session "Core_SC_DOM" (AFP) = "HOL-Library" + 
-  options [timeout = 1200] 
+  options [timeout = 1200, document = pdf, document_variants="document:outline=/proof,/ML",document_output=output]
   directories
     "common"
     "common/classes"