To access feature type parameters, click the gear icon 
on a feature type in the workspace to open the Feature Type Parameter Editor. To always display the editor in Workbench, you can select View > Windows > Parameter Editor.
General
All feature types share similar General parameters, which may include the Feature Type Name, Reader or Writer Name, and Geometry.
In most Writer Feature Type parameter dialogs, you can also control Dynamic Schema Definitions. Some database formats accept a Table Qualifier prefix on the output table feature type.
See Editing Writer Feature Types for more information.
These parameters apply only to a selected feature type, not to the entire writer.
Tip: If a feature type parameter listed here conflicts with a writer-level parameter, then the writer parameter will be ignored and this feature type parameter will be used.
File
Overwrite Existing File
- Yes (default): Overwrites the existing destination file.
- No: Appends to the existing destination file.
Line Termination
Specifies the format of line terminators to be used in the output file.
Write Last Line Terminator
Specifies whether the final line in the file should be terminated with an End of Line (EOL) character appropriate to the Line Termination parameter.
Advanced
Write UTF Byte Order Mark
This option specifies whether the byte order mark for UTF encoded file should be written at the beginning. This option applies only when the encoding is set to a UTF encoding.
Character Encoding
Controls which character encoding is used when writing the output file. If the value is not set, then the character encoding will be automatically detected from the system on which the translation is being performed.
Note that only the UTF encodings are stored by the format in the form of a Byte Order Marker (BOM), which is written optionally but by default when one of these encodings is chosen, and will be detected automatically when reading. All other character sets will need to be explicitly identified or they will be read as system.