There is a small button on the sleeve of a dress shirt just to the north of the cuff. For sartorial reference, that portion of the shirt is called the gauntlet. Hence, the button itself is aptly termed a gauntlet button. Spend any amount of time around men (or women) dressed for their business casual days and you’ll have the opportunity to acquaint yourself with this fashion detail. As with many functionally-limited components of today’s more structured attire, the gauntlet button was originally born out of utility and civility and has lingered. However it arrived on your well-dressed forearm, I encourage you to button it. No, it’s not because I have an obsessive…