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* [[Umlaut]] (or [[trema]]) ('''ü''') - An accent, represented by two dots above the vowel, used in some languages, especially [[German]] and [[Afrikaans]] and Nordic languages like [[Swedish]] and [[Finnish]].

* [[Umlaut]] (or [[trema]]) ('''ü''') - An accent, represented by two dots above the vowel, used in some languages, especially [[German]] and [[Afrikaans]] and Nordic languages like [[Swedish]] and [[Finnish]].

Eight characters with diacritics are included in International Morse Code: Ä, Á, Å, Ch, É, Ñ, Ö, and Ü. This system was developed by Friedrich Clemens Gerke in 1848 and adopted as an international standard in 1865. Extended ASCII, an eight-bit encoding standard introduced in 1981 with the IBM PC, has 37 characters with diacritics (both upper case and lower case). A slightly revised version of this character set is still in use as "Latin-1." Unicode UTF-16, included in Windows 2000, has many more characters with diacritics and has almost unlimited character set.

Eight upper case characters with diacritics are included in International Morse Code: Ä, Á, Å, Ch, É, Ñ, Ö, and Ü. This system also includes the twenty six characters of the Latin alphabet, ten numerals, and punctuation. It was developed by Friedrich Clemens Gerke in 1848 and adopted as an international standard in 1865. Extended ASCII, an eight-bit encoding standard introduced in 1981 with the IBM PC, has 37 characters with diacritics (both upper case and lower case). A slightly revised version of this character set is still in use as "Latin-1." Unicode UTF-16, included in Windows 2000, has many more characters with diacritics and has almost unlimited character set.

==Should you use them?==

==Should you use them?==