diff --git a/header.tex b/header.tex
index 6c6f769..ec2bf96 100644
--- a/header.tex
+++ b/header.tex
@@ -5,12 +5,18 @@
 firstinits=true,
 url=false,
 isbn=false,
+safeinputenc,%required for arxiv
 ]{biblatex}
 %Add the line below and make sure to not change the names
 %Also copy the file biber.conf which uses the names
 \addbibresource{references.bib}
 \addbibresource{short.bib}
+% Add additional usepackage commands here.
+% If you intent to submit to an ACM conference please consult
+% https://www.acm.org/publications/taps/whitelist-of-latex-packages
+% first.
 
+%TODO: Change the title below
 \title{Discovering Mathematical Objects of Interest---A Study of Mathematical Notations}