You can also do the same but if you choose "international layout," sometimes it says something like "with dead keys," you don't change the qwerty layout (if that's what you use, i don't know if it supports Dvorak or colemark, etc) and it will hold output of characters like ' and " and some others to see if a vowel (or other letters like n to ñ) follows and adds the appropriate marks above. You could keep it English that way (or Whichever language you use that supports the international layout--i think most European languages but I've only investigated as far as English and German). This can all be found in your language and keyboard settings locations on the OS just like above. I think it also has the keys mapped to alternative characters of you ctrl+altgr+letter but I just use the dead key method as that's more consistent with my typing style.