3.The SWIFT message format is saved as XML file in the location <installation dir>\config\swift\format in the given Format Name.
4.SWIFT Formats saved this way are available for creating formats in future. Refer Creating a SWIFT Format based on an existing SWIFT message format.
See Also:
Creating a SWIFT Format from an empty message format
Exporting a SWIFT Message Format
Importing a SWIFT Message Format
Sample Exported HTML File