diff --git a/README.md b/README.md
index 225f242..067c02d 100644
--- a/README.md
+++ b/README.md
@@ -61,36 +61,69 @@ Giambellino 7, 35129 Padova, Italy);
at [University of Padova](https://www.unipd.it/en).
## Parameters ##
-The parameters needed to set-up the AMG preconditioner in ChronosLab are the following:
-
-* **problem type** can be either **mech** or **lapl** and denotes the origin of the linear
- system at hand. The first one sets the default for mechanical problems, the second one
- for system arising from the discretization of Laplace equations.
-* **tspace_ntv** is the number of test vector (approximation of the near kernel) of the problem
- at hand. In general the size of the test space equals the size of the test space that is
- given as input but can be overwritten by the user through **tspace_ntv**. If there is no
- test space as input, the default value is 1.
-* **tspace_iter** is the number of iterations of SRQCG (Simultaneous minimization of
- the Rayleight Quotient though CG). By default the number of iterations is 0.
-* **smooth_type** defines the type of smoother that is used. Possible values are **jacobi**,
- **ligthFSAI**, **mediumFSAI**, **heavyFSAI** and **nestFSAI**. The first one is the simple
- Jacobi preconditioner. Those from light to heavy denote different FSAI set-up from the
- cheapest and less accurate to the more expensive and more accurate. The last one denotes
- a novel type to compute FSAI that is recommended for highly ill-conditioned problems.
-* **coars_tau** is the strength of connection threshold that is used for coarsening. In case
- of **mech** problems, the symmetric strength of connection is used with default 0.01.
- In case of **lapl** problems, the classical strength of connection is used with default
- 0.25.
-* **prolo_smooth** is a parameter used only for **mech** problems and can take value **none**
- if the prolongation is not improved by smoothing, **smooth** if the prolongation is smoothed
- and **emin** if the prolongation is improved by energy minimization. The default value is
- **emin**
-
-There are other parameters in ChronosLab that an advanced user can access to better tune
-the AMG set-up on the problem at hand. These parameters and their meaning can be found by
-inspecting the main driver in each folder (e.g. coarsen.m in the folder coarsen, tspace.m
-in the folder tspace, etc.). Moreover the FSAI smoother can be also used as stand-alone
-preconditioner.
+The parameters needed to set-up the AMG preconditioner in ChronosLab are the
+following:
+
+* **problem type** can be either **mech** or **lapl** and denotes the origin of
+ the linear system at hand. The first one sets the default for mechanical
+ problems, the second one for system arising from the discretization of
+ Laplace equations.
+* **tspace_ntv** is the number of test vector (approximation of the near
+ kernel) of the problem at hand. In general the size of the test space equals
+ the size of the test space that is given as input but can be overwritten by
+ the user through **tspace_ntv**. If there is no test space as input, the
+ default value is 1.
+* **tspace_iter** is the number of iterations of SRQCG (Simultaneous
+ minimization of the Rayleight Quotient though CG). By default the number of
+ iterations is 0.
+* **smooth_type** defines the type of smoother that is used. Possible values
+ are **jacobi**, **ligthFSAI**, **mediumFSAI**, **heavyFSAI** and
+ **nestFSAI**. The first one is the simple Jacobi preconditioner. Those from
+ light to heavy denote different FSAI set-up from the cheapest and less
+ accurate to the more expensive and more accurate. The last one denotes a
+ novel type to compute FSAI that is recommended for highly ill-conditioned
+ problems.
+* **coars_tau** is the strength of connection threshold that is used for
+ coarsening. In case of **mech** problems, the symmetric strength of
+ connection is used with default 0.01. In case of **lapl** problems, the
+ classical strength of connection is used with default 0.25.
+* **prolo_smooth** is a parameter used only for **mech** problems and can take
+ value **none** if the prolongation is not improved by smoothing, **smooth**
+ if the prolongation is smoothed and **emin** if the prolongation is improved
+ by energy minimization. The default value is **emin**.
+
+There are other parameters in ChronosLab that an advanced user can access to
+better tune the AMG set-up on the problem at hand. These parameters and their
+meaning can be found by inspecting the main driver in each folder (e.g.
+coarsen.m in the folder coarsen, tspace.m in the folder tspace, etc.). Moreover
+the FSAI smoother can be also used as stand-alone preconditioner.
+
+Here two examples of input file. The first one for a structural problem:
+
+```xml
+
+
+
+
+```
+
+while the next is for linear system arising from the Laplace equation:
+
+```xml
+
+
+
+
+```
## Terms of usage ##
**ChronosLab** is an open source software under the MIT license and can be
diff --git a/examples/lapl/config.xml b/examples/lapl/config.xml
index 75fc0cb..f36a19f 100644
--- a/examples/lapl/config.xml
+++ b/examples/lapl/config.xml
@@ -1,11 +1,8 @@
-
+
diff --git a/examples/mech/config.xml b/examples/mech/config.xml
index 13ab6d0..a400f13 100644
--- a/examples/mech/config.xml
+++ b/examples/mech/config.xml
@@ -1,13 +1,10 @@
-
-
-
+ />