First scan the designer's signature, then edit it with ACDSEE and save it. BMP format. (Note that this format must be used and a monochrome bitmap will be used, otherwise the bottom cannot be made transparent. Then click Insert-Raster Image in CAD drawing-find the signature you need, open it and confirm it, and insert it in the required position-and then click Object-Image-Border in the modify drop-down menu on the menu respectively, and change the ON of the command bar to OFF. Similarly, after clicking Transparent, change the closed to open to complete the operation.

CAD, called management software computer-aided design (MS-CAD), refers to the process of using computer software to design management software on the graphical development interface, design the process structure and data structure of management software, and finally generate independent management software through automatic data loading and analysis of computer software system.