Ahh, umlauts! A feature that comes with every Windows operating system I've ever used (clearly not OT's - oh, well), is a program called "Character Map" or "charmap.exe" When it is running, it shows a window with a grid of all possible characters in a font. Note that many fonts don't have all the characters, so this will not always work.
Anyway, that program shows, for example, Ä, ä, Ë, ë, Ï, ï, Ö, ö, Ü, and ü, not to mention ß.
I know the umlauted Is are not part of the German alphabet, but they are available for whatever purpose you might have for them, at least in most common fonts. So how do you get those characters?
Hold down the "Alt" key while you type in the four-digit code on the numeric keypad, not the top row of keys above qwerty... For the heck of it, here's a table for the characters I just posted.
Ä = 0196
ä = 0228
Ë = 0203
ë = 0235
Ï = 0207
ï = 0239
Ö = 0214
ö = 0246
Ü = 0220
ü = 0252
ß = 0223
There are 128 characters with codes from 128 to 255. I would suggest if unusual characters, including the cent sign (¢) and many other symbols that are probably not on your keyboard are important to you, that you create your own chart similar to mine, if you can't find charmap.
