A colleague is working on a local printed history and has always used justified text. However, it has been suggested that unjustified text is easier for those with dyslexia to understand. Is there any evidence for this? What format (font, font size, formatting) helps dyslexic readers the most? Do people with dyslexia have a preference? Is it potentially an issue with rivers of white in justified text? Any guidance about rules and about recommendations warmly received!