In exercises where you are asked to type in Gaelic, there are no buttons to click on for special characters (such as ò). Other DL languages provide this, so I hope it gets added here too. In the meantime, if you set your keyboard to "ENG INTL" (English International), you can get the left-leaning accents by pressing the back-quote key (`) followed by a letter key. For example, back-quote followed by o will give you ò. In this way you can enter characters like àèìòù.