Assuming this is the official 5e OGL sheet... <a href="https://wiki.roll20.net/5th_Edition_OGL_by_Roll20#Manually_Adding_Items" rel="nofollow">https://wiki.roll20.net/5th_Edition_OGL_by_Roll20#Manually_Adding_Items</a> ; there's some info about applying Mods. Cheers MODS: This is a text field where you would take note if an item (likely magical) would modify your stats in some fashion such as a character's Attributes, Saves, Skills, AC, To Hit, Damage, Spell Attacks, and Spell DC. If a stat is modified here, its attribute value will become highlighted in blue and adjusted by the supplied modifier listed here. An asterisk is appended to the right of the value to also signify that it has been modified by an item. While your mouse is hovering over the attribute, it will revert back to its unmodified total so you can refer back to its pre-moddified value. The format for a stat modification is stat name:n where n is the stat bonus (ex. Strength:21)