Mbé vs Marktgemeinde Hard

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In computer science, group coded recording or group code recording (GCR) refers to several distinct but related encoding methods for representing data on magnetic media. The first, used in 6250 bpi magnetic tape since 1973, is an error-correcting code combined with a run-length limited (RLL) encoding scheme, belonging into the group of modulation codes.

The others are different mainframe hard disk as well as floppy disk encoding methods used in some microcomputers until the late 1980s. GCR is a modified form of a NRZI code, but necessarily with a higher transition density.

Source: Wikipedia

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The municipal security guards (German: Gemeindesicherheitswachen) existing in about 40 Austrian municipalities are police forces besides the Austrian Federal Police. They may also be called city security guard (Städtische Sicherheitswache), municipal police (Gemeindepolizei), local police (Ortspolizei) or city police (Stadtpolizei).

The larger of these forces form municipal guard corps (Gemeindewachkörper; official translation: municipal constabularies) with competences equal to the Federal Police. Some municipalities including most statutory cities are not allowed to maintain a guard corps.

Source: Wikipedia