Update chapters/introduction.tex

Co-authored-by: Henrik Tidefelt <henrikt@wolfram.com>

chapters/introduction.tex

@@ -68,8 +68,8 @@ \section{Some Definitions}\label{some-definitions}
 \end{definition}
 
 \begin{definition}[Flattening]\index{flattening}
-The translation of a model described in Modelica to the corresponding model described as a hybrid DAE (see \cref{modelica-dae-representation}), involving expansion of inherited base classes, parameterization of base classes, local classes
-and components, and generation of connection equations from \lstinline!connect!-equations (basically, mapping the hierarchical structure of a model into a set of differential, algebraic and discrete equations together with the corresponding variable declarations and function definitions from the model).
+The translation of a model described in Modelica to the corresponding model described as a hybrid DAE (see \cref{modelica-dae-representation}), involving expansion of inherited base classes, parameterization of base classes, local classes and components, and generation of connection equations from \lstinline!connect!-equations.
+In other words, mapping the hierarchical structure of a model into a set of differential, algebraic and discrete equations together with the corresponding variable declarations and function definitions from the model.
 \end{definition}
 
 \begin{definition}[Initialization]\index{initialization}