diff --git a/.gitignore b/.gitignore
index f24cd99..6b6c905 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,12 @@ pip-log.txt
 
 #Mr Developer
 .mr.developer.cfg
+
+# LaTeX stuff
+*.aux
+*.idx
+*.log
+*.out
+*.pdf
+*.synctex.gz
+*.toc
diff --git a/book/book.tex b/book/book.tex
index 1a6bbff..071dd0b 100644
--- a/book/book.tex
+++ b/book/book.tex
@@ -25,7 +25,7 @@
 \usepackage{exercise}                        % texlive-latex-extra
 \usepackage{makeidx}
 \usepackage{setspace}
-\usepackage{hevea}                           
+\usepackage{hevea}                           % hevea package needed
 \usepackage{upquote}
 \usepackage{appendix}
 \usepackage[bookmarks]{hyperref}