\newcommand{\p}[1]{\texttt{#1}}

\newcommand{\Doc}[0]{\ensuremath{\mathit{Doc}}}
\newcommand{\Enr}[0]{\ensuremath{\mathit{Enr}}}
\newcommand{\Pres}[0]{\ensuremath{\mathit{Pres}}}
\newcommand{\Lay}[0]{\ensuremath{\mathit{Lay}}}
\newcommand{\Arr}[0]{\ensuremath{\mathit{Arr}}}
\newcommand{\Ren}[0]{\ensuremath{\mathit{Ren}}}

\newcommand{\fn}[1]{{\ensuremath{\mathsf {#1}}}}

\newcommand{\present}{\fn{present}}
\newcommand{\interpret}{\fn{interpret}}
\newcommand{\Level}[0]{\ensuremath{\mathit{Level}}}

% not used, so we redefine these commands
\renewcommand{\H}{_{\hspace*{0.076em} \mathrm H}}
\renewcommand{\L}{_{\hspace*{0.076em} \mathrm L}}