Creation of a Geometry Macro

The geometry macro is created by writing a geometry macro source text in a special macro language. This language is similar to other languages used for input to various applications. The syntax of the Geometry Macro Language is given in Syntax of the Geometry Macro Language. The source text is stored in an ordinary text file with an arbitrary name (= the name of the macro). It can thus be created using an ordinary editor. Only capital letters, digits and _ (underscore) are allowed characters in the macro and file name.