If the writer component does not have a connector to the 'Filename' input then the filename the data is written to is taken from this property.
If the connection point 'Filename' is connected, then this property is ignored (and can be blank)
Indicates that the filename is to be resolved relative to the data mapping file (.dm). If the transform is compiled the filename will be resolved relative to the compiled exe.
The encoding used to write the text data to a file.
If checked then all the column headings are written onto the first line of the file.