\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{keyvaltest}

\RequirePackage{ifthen}
\RequirePackage[patch]{kvoptions}


\SetupKeyvalOptions
{
  family = mrm,
  prefix = mrm@
}

\DeclareStringOption[0mm]{bincor}

\ProcessKeyvalOptions* %diese Zeile erzeugt die "falsche" Warnung
\ProcessOptions\relax

\LoadClass[12pt,a4paper]{scrbook}

\evensidemargin=-\mrm@bincor
\oddsidemargin=\mrm@bincor