The whole UEF file, including the header, may optionally be compressed in gzip format; by examining the start of the file for a gzip or UEF header, a decompression library can be invoked as appropriate.
The whole UEF file may optionally be compressed in gzip format. This was including the header. A decompression library was examining the start of the file for a gzip or UEF header. A decompression library can be invoked as appropriate.