\usepackage{graphicx}
\usepackage{bytefield}
\usepackage{parskip} % do not indent paragraphs
\usepackage{framed}
\usepackage{tikz}

\usepackage[T1]{fontenc}
\usepackage[scaled]{helvet}
\renewcommand*\familydefault{\sfdefault}

\thispagestyle{empty}

\newcommand{\pagehead}[1]{ \textbf{\Huge{#1}} }

\newcommand{\sample}[1]{
\vspace{10pt}
\centering
\fbox{
Code sample: \textbf{#1}
\includegraphics[width=128pt]{#1-screenshot.png}
}}

