\subsection{JPEG viewer}
Open a .jpg file in the file browser to view it\opt{recorder,recorderv2fm,ondio,h1xx}
    { contents using Rockbox's greyscale library}.

\begin{table}[ht!]
    \begin{center}
    \begin{tabular}{ll}\toprule
    \textbf{Key} & \textbf{Action}\\\midrule
    UP/DOWN/LEFT/RIGHT & Move around in zoomed in image\\
    \opt{recorder,recorderv2fm}{PLAY}\opt{ondio}{MODE}\opt{h1xx}{SELECT}\opt{h300}{NAVI}\opt{ipodcolor,ipodnano}{Scroll forward}
    & Zoom in\\
    \opt{recorder,recorderv2fm}{MENU}\opt{ondio}{MODE+DOWN}\opt{h1xx,h300}{A-B}\opt{ipodcolor,ipodnano}{Scroll backward}
    & Zoom out\\
    \opt{recorder,recorderv2fm}{F3}\opt{ondio}{MODE+RIGHT}\opt{h1xx}{PLAY}\opt{h300}{RECORD}\opt{ipodcolor,ipodnano}{SELECT+RIGHT}
    & Next jpeg in folder\\
    \opt{recorder,recorderv2fm}{F2}\opt{ondio}{MODE+LEFT}\opt{h1xx}{RECORD}\opt{h300}{PLAY}\opt{ipodcolor,ipodnano}{SELECT+LEFT}
    & Previous jpeg in folder\\
    \opt{recorder,recorderv2fm,h1xx,h300}{STOP}\opt{ondio}{OFF}\opt{ipodcolor,ipodnano}{SELECT+MENU}
    & Quit\\\bottomrule
    \end{tabular}
    \end{center}
\end{table}

\note{JPEGs that use progressive scan encoding are not supported and will 
  produce an error.}