@Workshopshed As the web page says: "The font has been modified to autocorrect specific words."; this already happens in many fonts on a smaller scale: Often /f followed by /i is replaced by the /f_i ligature. OpenType Layout rules let you have as many of these as you like (sort of, there are space and format limitations), so it would be possible to replace /G/O/P with /K/K/K. My own Koch Up font,
https://drj11.itch.io/koch-up-font, uses them to change certain glyphs to better fit the lettershape. E.G. The word REFER will have 2 different shapes of /E