The document defines several key terms used in Indian income tax law:
1) It defines assessee, assessment year, company, convertible foreign exchange, foreign exchange asset, and gross total income.
2) It also defines income, Indian company, investment income, long term capital gains, manufacture, non-resident Indian, person, previous year, principal officer, and specified asset.
3) The definitions provide clarity on entities and concepts central to calculating and assessing income tax in India such as what constitutes an assessee, assessment periods, types of corporate entities and income.