The program provides several automatic functions: automatic component placement, ballooning and many automation features. To work properly, these functions need to have well-formed figures. It's important to ensure the proper operation and to simply enter the mates properly. Each mate performs a specific function. There are mates for the positioning of the components, mates for ballooning and mates for the mirror of the components. The mates are defined as blocks with a specific name and a specific orientation. The mates are stored within a service dwg file called "blocks.dwg". You shall include this file in the table to have all the blocks of mates. The figure shows several mates highlighted.