The feature would bold the first half of all text displayed in the browser. Bolding the first half of a word creates a fixation point for readers with ADHD or dyslexia, guiding the eyes and delivering a significantly improved reading experience.
There are extensions for this for both Chrome and Safari, as well as some fonts that perform a similar function. Having it be built into Orion natively would make for a huge value add, as well as keep with Kagi's mission to humanize the web.