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Macros provide access to element fields within the UML model and are also used to structure the generated output. All macros are enclosed within percent (%) signs. The CTF contains five basic types of macros:

In general, macros (including the % delimiters) are substituted with literal text in the output. For example consider the following item from the Class Declaration template:

... class %className% ...

The field substitution macro, %className%, would result in the current Class name being substituted in the output. So if the Class being generated was named Foo, the output would be:

... class Foo ...