Warnock gave the American Philosophical Society's Goldstine Lecture in 2010, titled "Simple Ideas That Changed Printing and Publishing". A video can be found here: https://diglib.amphilsoc.org/islandora/video/simple-ideas-ch...

In a paper that accompanied the video, Warnock outlined the methods Adobe used, describing them as '[type] hints and erosion [that] produced high-quality raster representations of the letters at medium and high resolution." Paper linked here: https://www.researchgate.net/publication/298409252_Simple_Id...