Reformat and slightly reword section 2.4

diff --git a/8.5/paper.tex b/8.5/paper.tex
index 97b9eeb0a958916b52c9cb7e0fa0ec0856f437b4..d4420f9490c7c8443bc75261e665ae4d6936db4c 100644 (file)
--- a/8.5/paper.tex
+++ b/8.5/paper.tex
@@ -259,12 +259,24 @@ number of vector systems.
 
 \subsection{The physics module}
 
-A dedicated physics module has been created to facilitate the implementation of functions and classes that relate to continuum physics, physical fields and material constitutive laws.
-To date, it includes transformations of scalar or tensorial quantities between any two configurations, and some definitions typically utilized in both linear and finite-strain nonlinear elasticity.
-
-The \verb!Physics::Transformations! namespace offers push-forward and pull-back operations in the context of contravariant, covariant and Piola transformations, as well as rotation operations for Euclidean space.
-In the \verb!Physics::Elasticity::Kinematics! namespace, a selection of deformation, strain tensors and strain rate tensors are defined.
-The \verb!Physics::Elasticity::StandardTensors! class provides some frequently used second and fourth order metric tensors, and defines some referential and spatial projection operators and tensor derivatives as commonly required in the definition of material laws.
+A dedicated physics module has been created to facilitate the
+implementation of functions and classes that relate to continuum mechanics,
+physical fields and material constitutive laws. To date, it includes
+transformations of scalar or tensorial quantities between any two
+configurations,
+\marginpar{which configurations?}
+and some definitions typically utilized in both linear and finite-strain
+nonlinear elasticity.
+
+The \verb!Physics::Transformations! namespace offers push-forward and
+pull-back operations in the context of contravariant, covariant and Piola
+transformations, as well as rotation operations for the Euclidean space. In
+the \verb!Physics::Elasticity::Kinematics! namespace, a selection of
+deformation, strain tensors and strain rate tensors are defined. The
+\verb!Physics::Elasticity::StandardTensors! class provides some frequently
+used second and fourth order metric tensors, and defines a number of
+referential and spatial projection operators and tensor derivatives that
+are commonly required in the definition of material laws.
 
 \subsection{Scalability of geometric multigrid framework}