.. _secThreeSteps:


The 3 steps to run RASCAS
##########################

**RASCAS** works in three steps. First, one creates a set of
mesh/domain files with ``CreateDomDump``. Second, one creates initial
conditions for photons, with ``PhotonsFromStars``. Finally, one runs the
radiative transfer with ``rascas``. Each code has its parameter
file. We will discuss in more details each of these steps below:

      * Creating a set of the mesh/domain files with
	:ref:`CreatDomDump <secCreateDomDump>`

      * Generating the Photon Packet Initial Condition (PPIC) file
	with one of the three :ref:`PPIC codes <secppic>`

      * Running the :ref:`radiative transfer <secRunRT>`