German language
Present

Before the German orthography reform of 1996, ß replaced ss after long vowels and diphthongs and before consonants, word-, or partial-word endings. In reformed spelling, ß replaces ss only after long vowels and diphthongs.

Since there is no traditional capital form of ß, it was replaced by SS (or SZ) when capitalization was required. For example, Maßband (tape measure) became MASSBAND in capitals. An exception was the use of ß in legal documents and forms when capitalizing names. To avoid confusion with similar names, lower case ß was sometimes maintained (thus " KREßLEIN " instead of " KRESSLEIN "). Capital ß (ẞ) was ultimately adopted into German orthography in 2017, ending a long orthographic debate (thus " KREẞLEIN and KRESSLEIN ").

Umlaut vowels (ä, ö, ü) are commonly transcribed with ae, oe, and ue if the umlauts are not available on the keyboard or other medium used. In the same manner, ß can be transcribed as ss. Some operating systems use key sequences to extend the set of possible characters to include, amongst other things, umlauts; in Microsoft Windows this is done using Alt codes. German readers understand these transcriptions (although they appear unusual), but they are avoided if the regular umlauts are available, because they are a makeshift and not proper spelling. (In Westphalia and Schleswig-Holstein, city and family names exist where the extra e has a vowel lengthening effect, e.g. Raesfeld, Coesfeld and Itzehoe, but this use of the letter e after a/o/u does not occur in the present-day spelling of words other than proper nouns.)

There is no general agreement on where letters with umlauts occur in the sorting sequence. Telephone directories treat them by replacing them with the base vowel followed by an e. Some dictionaries sort each umlauted vowel as a separate letter after the base vowel, but more commonly words with umlauts are ordered immediately after the same word without umlauts. As an example in a telephone book Ärzte occurs after Adressenverlage but before Anlagenbauer (because Ä is replaced by Ae). In a dictionary Ärzte comes after Arzt, but in some dictionaries Ärzte and all other words starting with Ä may occur after all words starting with A. In some older dictionaries or indexes, initial Sch and St are treated as separate letters and are listed as separate entries after S, but they are usually treated as S+C+H and S+T.

Written German also typically uses an alternative opening inverted comma (quotation mark) as in „Guten Morgen!“.
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