.. _d7.01.02:

**d7.01.02** Develop a new macro command
===================================================

**Summary:**

This document complements the development training presentations.
It details the steps required to complete the addition exercise
of a new macro command.

We propose to create a new macro-command that converts a mesh from the format
ASTER, GIBI or GMSH in MED format and create a table containing some information
extracted from the mesh.

The objective is to know:

- write the order catalog;
- access keyword values from Python;
- use commands within the macro command;
- call the user message printing utility;
- extract information from the mesh by calling its methods;
- build and test its development.


**Note:**

    The essential prerequisites before starting to develop is to know:

    - the Fortran,
    - Python (including Object Oriented Programming),
    - the Git version manager,
    - the GitLab interface.

    A skeleton of the required files is provided during the training in order to
    to guide new developers.

    It is recommended to start with :ref:`d7.01.01-build-ref`, then
    The :ref:`d7.01.01-build-branch`.


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    objectif
    catalog
    ops
    solution