diff --git a/document.pdf b/document.pdf
index 54e2498..76b4363 100644
Binary files a/document.pdf and b/document.pdf differ
diff --git a/document.tex b/document.tex
index 8184b30..60c2be3 100644
--- a/document.tex
+++ b/document.tex
@@ -76,6 +76,7 @@
 \usepackage{makecell} %% for multiple lines in cell of table
 \usepackage{cancel}
 \usepackage{pgfornament} %% ornaments
+\usepackage{makeidx}
 
 %% load last
 \usepackage[hidelinks]{hyperref} %% links for table of contents, load last
@@ -249,10 +250,14 @@
 }
 \date{\today}
 
+\makeindex
+
 %% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - %%
 
 \begin{document}
 
+\tableofcontents
+
 \input{introduction}
 \input{background}
 \input{design}