\newcommand{\reading}[1]{{\em Reading}: #1}

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\newcommand{\psdue}[1]{Problem Set #1 due}

\newcommand{\myif}{{\bf if}}
\newcommand{\myelse}{{\bf else}}
\newcommand{\ret}{{\bf return}}
\newcommand{\for}{{\bf for}}
\newcommand{\myto}{{\bf to}}
\newcommand{\key}{\mbox{{\em key}}}
