What is meant by copyright under Section 14 of the Copyright Act, 1957 in relation to a computer programme and an artistic work?

According to Section 14 of the Copyright Act, 1957, copyright means the exclusive right of the owner of the work, subject to the provisions of the Act, to do or to authorise the doing of certain acts in respect of the work or any substantial part of it. In the case of a computer programme: to do any of the acts specified in respect of a literary, dramatic or musical work; to sell or give on commercial rental or offer for sale or for commercial rental any copy of the computer programmer: Provided that such commercial rental does not apply in respect of computer programmes where the programme itself is not the essential object of the rental. In the case of an artistic work, -- to reproduce the work in any material form including-- the storing of it in any medium by electronic or other means; or depiction in three-dimensions of a two-dimensional work; or depiction in two-dimensions of a three-dimensional work. to communicate the work to the public; to issue copies of the work to the public not being copies already in circulation; to include the work in any cinematograph film; to make any adaptation of the work; to do in relation to adaptation of the work any of the acts specified in relation to the work in sub-clauses (i) to (iv);