Internet Explorer up to version 6 contained a copyright note about containing Spyglass Mosaic code in the about dialog. Obscure layout glitches and behaviours f

Internet Explorer up to version 6 contained a copyright note about containing Spyglass Mosaic code in the about dialog. Obscure layout glitches and behaviours from Mosaic were definitely in IE up to version 8 (e.g. mouse pointer related code). Many things (UI, seperation of code into libraries, API) of IE 11 trace back to IE 3.