-\def\chapid#1{\writeid{ch#1}{\the\chapcount}}
-\def\secid#1{\writeid{sec#1}{\the\chapcount.\the\seccount}}
-\def\thmid#1{\writeid{thm#1}{\the\chapcount.\the\seccount.\the\thmcount}}
-
-\def\chapref#1{\ref{ch#1}}
-\def\secref#1{\ref{sec#1}}
-\def\thmref#1{\ref{thm#1}}