Regulation 7—Description.(1) The description shall, after stating the title of the invention—(a)  specify the technical field to which the invention relates;(b) indicate the background art which, as far as the applicant knows, can be regarded as useful for the understanding, searching and examination of the invention, and, preferably, cite the documents reflecting the background art;(c)  disclose the invention as claimed so that the technical problem and its solution can be understood and state the advantageous effects of the invention with reference to the background art;(d)  briefly describe the figures in the drawings, if any;(e) state the best mode known to the applicant for carrying out the invention by the inventor at the filing date or, where priority is claimed, the priority date of the application, this shall be done in terms of examples where appropriate and with reference to the drawings if any; and(f)  indicate explicitly, when it is not otherwise obvious from the description or nature of the invention, the way in which the invention is capable of industrial application or of other use.(2) The contents of the description of the invention be shall presented in the order in which the contents are listed in sub-regulation (1), unless, because of the nature of the invention, a different order affords a better understanding and a more economical presentation.