Many calendar apps use roundrects for items which helps for multi-day appointments/events because you can tell which is the start/left edge of the item and whic

Many calendar apps use roundrects for items which helps for multi-day appointments/events because you can tell which is the start/left edge of the item and which is the end/right edge of the item. I'm not sure what's displayed if the app shows the middle portion of an event that extends for more than one week - maybe a rectangle, if the rounded corners signify the beginning/ending of an event.