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tutorials:beginner:motion_designators [2019/07/09 19:06] – [Adding a motion for controlling the pen] gkazhoyatutorials:beginner:motion_designators [2019/07/09 19:06] – gkazhoya
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 1.5 1.5
 </code> </code>
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 +We call the variable ''*my-desig*'' with asterisks as this is the common convention in Common Lisp for naming global variables.
  
 We use the ''a'' macro to create designators. Internally it uses the ''make-designator'' function to create a designator of the specified type. The macro allows us to write cleaner code for designator creation. We use the ''a'' macro to create designators. Internally it uses the ''make-designator'' function to create a designator of the specified type. The macro allows us to write cleaner code for designator creation.