CA Inter EFF | Amendments Doubt | Non-departmental Enterprises

Pls Read the Extract below:

Domestic income may be categorised into:
1. Income from domestic product accruing to the public sector which includes income from property and entrepreneurship accruing to government administrative departments and savings of non-departmental enterprises

2. Income from domestic product accruing to private sector = NDP at FC – Income from property and entrepreneurship accruing to government administrative departments – Savings of non-departmental enterprises

—————–

QUERY: What is the meaning of Non-Departmental Enterprises in the above text? Also, what would constitute Departmental Enterprises?