Common steps and sub-activities

A common step is a sub-function or sub-activity of an activity, a more detailed method or a more detailed approach to the activity.  It is possible for an activity to have none, one or many common steps, and in turn a common step may be used by more than one activity.

So for example, all the asanas in Yoga can be used to exercise and keep fit.  Some of the same asanas may also help with healing and your health and as such  might be cross referenced to healing yourself.


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