I work with a custom style sheet where a lot of special cells style are define. One of these style is mytext that i use to write some french text with sometimes formulas in boxes In these formulas the single letter are in italic, i tried to change this option at the cell level, it doesn't work, in the definition of the style mytext, no more success. I dont want to change TraditionnalForm options in general, just no more single letter italics in formulas that appear in the cells with mytext style. Maybe isn't possible ?