Hi, @ehills, there are actually a few reasons that we went with 'mi' instead of simply 'm' for this keyboard shortcut for missing. First, it keeps consistency with the 2 characters used with 'ex' for excused. More importantly, we have many users that use Grading Schemes that are based on mastery-based grading models and include M as one of the grades that a student can be given on an assignment and/or as a final grade. And, finally, 'm' is already a gradebook level keyboard shortcut that allows a user to open the menu for the active column’s assignment. You can see a list of other keyboard shortcuts available across Canvas here, if interested.