+\ifdefined\Cht\else\newdimen\Cht\fi
+\ifdefined\cht\else\newdimen\cht\fi
+\ifdefined\Cdp\else\newdimen\Cdp\fi
+\ifdefined\cdp\else\newdimen\cdp\fi
+\ifdefined\Cwd\else\newdimen\Cwd\fi
+\ifdefined\cwd\else\newdimen\cwd\fi
+\ifdefined\Cvs\else\newdimen\Cvs\fi
+\ifdefined\cvs\else\newdimen\cvs\fi
+\ifdefined\Chs\else\newdimen\Chs\fi
+\ifdefined\chs\else\newdimen\chs\fi
+\ifdefined\cHT\else\newdimen\cHT\fi