Factory
From Fmepedia
A Factory is a low-level piece of functionality in FME that performs a specific operation on the objects being passed through it. Factories, together with Functions, are the building blocks of FME since Workbench transformers are high-level tools that process features by referencing one or more Factories and/or Functions.
An FME Factory can be used directly within a Mapping File, for example...
FACTORY_DEF * CreationFactory \ FACTORY_NAME 2DCREATOR \ 2D_GEOMETRY 0 0 10 10 \ CREATE_AT_END no \ NUMBER_TO_CREATE 1 \ OUTPUT FEATURE_TYPE 2DCREATOR_CREATED \

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