The Generic Writer allows FME to reroute output to any FME writer dynamically when a translation is run. The name of the true writer is supplied as an argument to the Generic Writer.
The Generic Writer allows translations and transformations to be completely specified independent of output format, and is very useful for solving problems where the schemas and transformations are known at design time, but the output format is not.
Output
Output Format
Specifies the name of the format that will be used at runtime to output the data.