diff -r b45f2768fab1 -r 81aa8aaccdd4 doc/conf.py
--- a/doc/conf.py	Sat Aug 19 16:30:15 2017 +0300
+++ b/doc/conf.py	Sat Aug 19 16:45:37 2017 +0300
@@ -174,14 +174,14 @@
 # -- Options for LaTeX output --------------------------------------------------
 
 latex_elements = {
-# The paper size ('letterpaper' or 'a4paper').
-#'papersize': 'letterpaper',
-
-# The font size ('10pt', '11pt' or '12pt').
-#'pointsize': '10pt',
-
-# Additional stuff for the LaTeX preamble.
-#'preamble': '',
+    # The paper size ('letterpaper' or 'a4paper').
+    #'papersize': 'letterpaper',
+
+    # The font size ('10pt', '11pt' or '12pt').
+    #'pointsize': '10pt',
+
+    # Additional stuff for the LaTeX preamble.
+    #'preamble': '',
 }
 
 # Grouping the document tree into LaTeX files. List of tuples