As suggested: non-discrete-time.

chapters/equations.tex

@@ -761,7 +761,7 @@ \section{Initialization, initial equation, and initial algorithm}\label{initiali
   The equations and assignments in these initial sections are purely algebraic, stating constraints between the variables at the initial time instant.
   It is not allowed to use when-clauses in these sections.
 \item
-  For a non-discrete \lstinline!Real! variable \lstinline!vc!, the equation \lstinline!pre(vc) = vc! is added to the initialization equations.
+  For a non-discrete-time \lstinline!Real! variable \lstinline!vc!, the equation \lstinline!pre(vc) = vc! is added to the initialization equations.
   \begin{nonnormative}
   If \lstinline!pre(vc)! is not present in the flattened model, a tool may choose not to introduce this equation, or if it was introduced
   it can eliminate it (to avoid the introduction of many dummy variables \lstinline!pre(vc)!).