\documentclass[11pt]{scrartcl}

% vim: tw=50

\usepackage{notesheader}

{
% \renewtheorem{customtheorem}{Theorem}[section]
% \renewtheorem{customtheorem}[customlemma]{Theorem}
}

\begin{document}

\newcommand\coursecode{QM}
\title{Quantum Mechanics}
\author{}
\date{\today}
\maketitle

\tableofcontents

\newpage

\lecturelist

\newpage

\inputlectures

\end{document}