(9) Where an application contains more than ten claims, the applicant shall pay for each claim beyond the ten as if it is contained in a separate application. 8. Drawings. The drawings shall comply with the following— (a) the lines of the drawings shall be black, durable, uniformly thick and well-defined; (b) the drawings, including their scale and the distinctness of their lines, shall be such that all details can be distinguished without difficulty when the drawings are reproduced photographically at two thirds their actual size; (c) where the scale is given on a drawing, it shall be given graphically; (d) cross sections shall be indicated by hatching that does not impede the clear reading of the reference signs and reading lines; (e) where the drawings show a feature mentioned in the description, that feature shall be denoted in the drawings by a reference sign and that reference sign shall be used throughout the application to denote that feature. 9. Abstract. (1) The title shall indicate the title of the invention. (2) The abstract shall include a summary of the disclosure included in the description under section 21(5) of the Act. (3) The abstract shall not include statements about the merits or value of the invention or about uses that are speculative. (4) Where applicable, the abstract shall include the formula that best characterizes the invention. 214