Indentation

In the config.yaml file, it is important to keep a consistent indentation. The convention that is agreed on is the use of 4 spaces. For example:

Output:
    Output_Interval: 1.0
    Particles:
        Format:      ["Oscar2013"]

This is a part of the output configuration. The Output_Interval attribute belongs to the Output category, whereas Particles is a subcategory.