Maintenance numpy + add extract csv command lines

doc/source/generating_joint_analysis.rst

@@ -38,8 +38,14 @@ If the user wishes to, she/he can specify a vector of weight by using the --cust
 Access HDFStore components
 --------------------------
 
-To access each table of the HDFStore you can use `pandas read_hdf functions <https://pandas.pydata.org/docs/reference/api/pandas.read_hdf.html>`_ :
+Each table of the HDFStore is accessible through the command line tool `jass extract-tsv` (see command line reference for complete details).
 
+.. code-block:: shell
+
+  jass extract-tsv --hdf5-table-path ./initTable.hdf5 --tsv-path './test_extract.tsv' --table-key SumStatTab
+
+Alternately, you can use directly `pandas read_hdf functions <https://pandas.pydata.org/docs/reference/api/pandas.read_hdf.html>`_ :
+ 
 For instance if you want to access the Regions table :
 
 .. code-block:: python