Reorder in increasing order of variability

Rules should generally be presented in this order, as the lower variabilities are included in the higher ones.

chapters/equations.tex

@@ -722,6 +722,7 @@ \section{Events and Synchronization}\label{events-and-synchronization}
 verification already at compile time.
 \end{nonnormative}
 
+
 \section{Initialization, initial equation, and initial algorithm}\label{initialization-initial-equation-and-initial-algorithm}
 
 Before any operation is carried out with a Modelica model (e.g., simulation or linearization), initialization takes place to assign consistent values for all variables present in the model.
@@ -772,11 +773,11 @@ \section{Initialization, initial equation, and initial algorithm}\label{initiali
   Implicitly by using the \lstinline!start!-attribute for variables with \lstinline!fixed = true!.  With \lstinline!start! given by \lstinline!startExpression!:
   \begin{itemize}
   \item
-    For a non-discrete-time \lstinline!Real! variable \lstinline!vc!, the equation \lstinline!vc = startExpression! is added to the initialization equations.
+    For a variable declared as \lstinline!constant! or \lstinline!parameter!, no equation is added to the initialization equations.
   \item
     For a discrete-time variable \lstinline!vd!, the equation \lstinline!pre(vd) = startExpression! is added to the initialization equations.
   \item
-    For a variable declared as \lstinline!constant! or \lstinline!parameter!, no equation is added to the initialization equations.
+    For a non-discrete-time \lstinline!Real! variable \lstinline!vc!, the equation \lstinline!vc = startExpression! is added to the initialization equations.
   \end{itemize}
 \end{enumerate}