Minor cleanup for for-equation listings

chapters/equations.tex

@@ -115,7 +115,7 @@ \subsubsection{Explicit Iteration Ranges of For-Equations}\label{explicit-iterat
 for r in 1.0 : 1.5 : 5.5 loop  // r takes the values 1.0, 2.5, 4.0, 5.5
 for i in {1, 3, 6, 7} loop     // i takes the values 1, 3, 6, 7
 for i in TwoEnums loop         // i takes the values TwoEnums.one, TwoEnums.two
-                               // for TwoEnums = enumeration(one,two)
+                               // for TwoEnums = enumeration(one, two)
 \end{lstlisting}
 
 The loop-variable may hide other variables as in the following example.
@@ -124,8 +124,8 @@ \subsubsection{Explicit Iteration Ranges of For-Equations}\label{explicit-iterat
   constant Integer j = 4;
   Real x[j]
 equation
-  for j in 1:j loop  // The loop-variable j takes the values 1,2,3,4
-    x[j] = j;        // Uses the loop-variable j
+  for j in 1 : j loop  // j takes the values 1, 2, 3, 4
+    x[j] = j;          // Uses the loop-variable j
   end for;
 \end{lstlisting}
 \end{example}
@@ -138,10 +138,11 @@ \subsubsection{Implicit Iteration Ranges of For-Equations}\label{implicit-iterat
 
 \begin{example}
 \begin{lstlisting}[language=modelica]
-  Real x[n],y[n];
-for i loop          // Same as:  for i in 1:size(x ,1) loop
-  x[i] = 2*y[i];
-end for;
+  Real x[n], y[n];
+equation
+  for i loop          // Same as: for i in 1 : size(x, 1) loop
+    x[i] = 2 * y[i];
+  end for;
 \end{lstlisting}
 \end{example}