The illustration below shows the use of both the Air Products signature and the rule line, which are used together on all electronic, administrative, and print communication materials, and the Air Products corporate colors. X is the overall horizontal dimension of the signature. P is a measurement of a particular part of the symbol, which correlates with the letter height of the Air Products logotype. The colors shown here and throughout the on-line manual are not intended to match the PANTONE Color Standards. PANTONE® is a registered trademark of Pantone, Inc. PANTONE is Pantone, Inc.'s check standard trademark for color reproduction and color reproduction materials. Refer to the Corporate Graphic Standards On-line Manual for specific sizes and measurements.