[1] Welcome to Netscape Navigator Version 2.0 ( ( 版)) http://web.archive.org/web/20030202175634/http://wp.netscape.com/eng/mozilla/2.0/relnotes/windows-2.0.html#Images
[2] Introducing Netscape Navigator 2.0, , http://web.archive.org/web/19970613233304/http://www1.netscape.com/comprod/products/navigator/version_2.0/progressive_jpeg/index.html
[3] Netscape - JPEG Frequently Asked Questions, , http://web.archive.org/web/19970614000641/http://www82.netscape.com/comprod/products/navigator/version_2.0/progressive_jpeg/progressive_faq.html