\startenvironment notation

\define[1]\Fam{\mathcal{#1}}
\define\lang{\mathcal{L}}
\define\autom{\mathcal{A}}

% L* algorithms
\define\LStar{{\tt L}$^{\ast}$}
\define\NLStar{{\tt NL}$^{\ast}$}
\define\nLStar{$\nu$\LStar}
\define\nNLStar{$\nu$\NLStar}

\define\N{\naturalnumbers}
\define\EAlph{\mathbb{A}}

% language extension
\define\Lext{{\cdot}}

\stopenvironment