use_custom.md

 ## Writing custom scripts
 Users can customize their use of DART by writing their own scripts. Each script follows a similar pattern, which is detailed in the following pages:
-0. [Importing the modules](use_custom_import)
-1. [Creating the mesh](use_custom_mesh)
-2. [Defining the problem](use_custom_prob)
-3. [Solving the flow](use_custom_solver)
-4. [Post-processing the results](use_custom_post)
+1. [Importing the modules](use_custom_import)
+2. [Creating the mesh](use_custom_mesh)
+3. [Defining the problem](use_custom_prob)
+4. [Solving the flow](use_custom_solver)
+5. [Post-processing the results](use_custom_post)
 
 *Note* DART can be used in a development or in a production environement. For the former, the code needs to be compiled, and then launched using [run.py](https://gitlab.uliege.be/am-dept/dartflo/blob/master/run.py). For the latter, the code needs to be installed to a location which is in the python path (the default install path is the user's python site-packages).