QWERTY
The QWERTY layout was made to type in English, therefore it has no accent marks as they are not used in native English words. People from other countries whose own languages used accent marks (such as French, which has letters like "é", "î", and "ç") had problems. Depending on the operating system and the application being used, one can type accents marks by holding down the Alt key while pressing several number keys in a row. As an example, holding the Alt key, pressing the number keys 1, 5, and 6, then releasing the Alt key will generate a character numbered 156 in some character set. The Control or Alt key can be also used together with a letter. In some word processors, like Microsoft Word, characters with accent marks could be found under a category named "Special Characters" or something similar. Windows also has a program called "Character Map" that can be used to find and copy characters that could be pasted into other applications later on.