L2 : use module, only 
*********************

Module imports via the USE statement shall contain an ONLY specifier.


**To be avoided :**

.. code-block:: fortran

   USE GEOMETRY_MOD
   USE YOMRIP

**Correct way to import from modules :**

.. code-block:: fortran

   USE GEOMETRY_MOD, ONLY : TYPE_GEOMETRY
   USE YOMRIP,       ONLY : NSTADD

Exceptions
==========
* Fypp-based modules, as cmake's dependency analysis does not know what symbols a fypp module will expose.
* modules where ASSIGNMENT operator is overloaded