Regulation 12—Size and Presentation of Documents.(1)  A description, claim, drawing, abstract and any replacement sheets shall be filed in triplicate.(2)  All documents shall be so presented as to permit direct reproduction by photography, electrostatic processes, photo offset and micro-filming, in an unlimited number of copies.  All sheets shall be free from cracks, creases and folds.  Only one side of the sheet shall be used, except in the case of the request for the grant of a patent.(3)  All documents and drawings shall be on A4 paper 29.7cm x 21cm which shall be liable, strong, white, smooth, matt and durable.  Each sheet (other than the drawing) shall be used with its short sides at the top and bottom in an upright position.(4)  A request for the grant of a patent and the description, claims, drawings and abstract shall each commence on a new sheet which shall be connected in such a way that they can easily be turned over, separated and joined together again.(5)  Subject to regulation 10 (1), the minimum margins shall be as follows—top      ...  ...  ...  ...  ...  ...  2cm;left side     ...  ...  ...  ...  ...  2.5cm;right side   ...  ...  ...  ...  ...  2cm; andbottom      ...  ...  ...  ...  ...  2cm.(6)  The margins of the documents that make up the application and of any replacement documents shall be completely blank.(7)  In the application, except in the drawings—(a)  all sheets in the request shall be numbered consecutively;(b)  in addition to an independent claim for a product, an independent claim for a process specially adapted for the manufacture of the product, and an independent claim for an apparatus or means specifically designed for carrying out the process; and(c)  all other sheets shall be numbered consecutively as a separate series and all the numbering shall be in arabic numerals placed at the top of the sheet, in the middle, but not in the top margin.(8)  In the application, every fifth line of each sheet of description and the claims shall be numbered in arabic numerals placed to the left of the relevant lines but to the right of the margin.(9) All sheets of drawings contained in the application shall be numbered consecutively as a separate series and the numbering shall be in arabic numerals placed at the top of the sheet, in the  middle, but in the top margin.(10) Every document other than drawings, referred to in subregulation (1) of this regulation shall be typed or printed in a dark, indelible colour, at least 1½ line spacing and in characters of which the capital letters are not less than 0.21cm high.  Graphic symbols and characters and chemical and mathematical formulae may, when necessary, be written by hand or drawn in a dark indelible colour.(11) A request for the grant of a patent, the description, the claims and the abstract shall not contain drawings, the description, the claims and the abstract may contain chemical or mathematical formulae.  The description and the abstract may contain tables.  The claims may contain tables only if their subject-matter makes the uses of tables desirable.(12) In all documents, including drawings, units of weights and measures shall be expressed in terms of the metric system.  If a different system is used they shall also be expressed in terms of the metric system.  Temperatures shall be expressed in degrees celsius.  For the other physical values, the units recognized in international practice shall be used; for mathematical formulae, the symbols in general use, and for chemical formulae symbols, atomic weights and molecular formulae in general use shall be employed. In general, use should be made of technical terms, signs and symbols generally accepted in the field concerned.(13) If a formula or symbol is used in the specification, a copy prepared in the same manner as drawings, shall be furnished if the Registrar so directs.(14) The terminology and the signs shall be consistent throughout the application.