diff --git a/docs.it4i/salomon/software/numerical-languages/opencoarrays.md b/docs.it4i/salomon/software/numerical-languages/opencoarrays.md
index d708bf21f6036adba2dad26c073ec337b2403af3..901a8020ae6d3fc117b1f1181c12c2fcc9c0f721 100644
--- a/docs.it4i/salomon/software/numerical-languages/opencoarrays.md
+++ b/docs.it4i/salomon/software/numerical-languages/opencoarrays.md
@@ -13,6 +13,8 @@ By default, the CAF is using Message Passing Interface (MPI) for lower-level com
 
 Read more on <http://www.opencoarrays.org/>
 
+## Coarray Basics
+
 ### Indexing of coarray images
 
 Indexing of individual images can be shown on the simple *Hello World* program:
@@ -74,13 +76,21 @@ Example program:
     **number** is the local variable while **number[*index*]** accesses the variable in a specific image.  
     **number[this_image()]** is the same as **number**.
 
-### Compiling CAF program
+## Compile and run
+
+Currently, version 1.8.10 compiled with OpenMPI 1.10.7 library is installed on Cluster. The OpenCoarrays module can be load as follows:
+
+```console
+$ ml OpenCoarrays/1.8.10-GCC-6.3.0-2.27
+```
+
+### Compile CAF program
 
 The preferred method for compiling a CAF program is by invoking the *caf* compiler wrapper.
 The above mentioned *Hello World* program can be compiled as follows:
 
-```bash
-    $ caf hello_world.f90 -o hello_world.x
+```console
+$ caf hello_world.f90 -o hello_world.x
 ```
 
 !!! warning
@@ -89,33 +99,29 @@ The above mentioned *Hello World* program can be compiled as follows:
 
 Another method for compiling is by invoking the *mpif90* compiler wrapper directly:
 
-```bash
-    $ mpif90 hello_world.f90 -o hello_world.x -L $CAF_LIBRARY_PATH -fcoarray=lib -lcaf_mpi
+```console
+$ mpif90 hello_world.f90 -o hello_world.x -fcoarray=lib -lcaf_mpi
 ```
 
 
-### Running CAF program
+### Run CAF program
 
-The preferred method for running a CAF program is by invoking the *cafrun* wrapper:
+A CAF program can be run by invoking the *cafrun* wrapper or directly by the *mpiexec*:
 
-```bash
-    $ cafrun -np 4 ./hello_world.x
+```console
+$ cafrun -np 4 ./hello_world.x
     Hello world from image            1 of           4
     Hello world from image            2 of           4
     Hello world from image            3 of           4
     Hello world from image            4 of           4
-```
-
-where **-np 4** is number of images to run.
 
-Another method is using the *mpiexec* directly:
-
-```bash
-    $ mpiexec -np 4 ./synchronization_test.x
+$ mpiexec -np 4 ./synchronization_test.x
     The random number is         242
     The random number is         242
     The random number is         242
     The random number is         242
 ```
 
-The parameters of **cafrun** and **mpiexec** are the same.
\ No newline at end of file
+where **-np 4** is number of images to run. The parameters of **cafrun** and **mpiexec** are the same.
+
+For more information about running CAF program please follow [Running OpenMPI](../mpi/Running_OpenMPI.md)
diff --git a/mkdocs.yml b/mkdocs.yml
index 6f09d5b97c336be8bdccfa7d91cdf97b0e67dd7a..4ab7eb725f617721bb6155a34fc358e9a7ce3e2e 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -117,9 +117,8 @@ pages:
         - Introduction: salomon/software/numerical-languages/introduction.md
         - Matlab: salomon/software/numerical-languages/matlab.md
         - Octave: salomon/software/numerical-languages/octave.md
-        - R: salomon/software/numerical-languages/r.md
-        - 'Fortran':
-          - OpenCoarrays: salomon/software/numerical-languages/opencoarrays.md
+        - R: salomon/software/numerical-languages/r.md    
+        - OpenCoarrays: salomon/software/numerical-languages/opencoarrays.md
       - Operating System: salomon/software/operating-system.md
       - ParaView: salomon/software/paraview.md
     - Anselm Software: