AltGr key

A keyboard with additional engravings showing third-level and fourth-level characters included in the US-International keyboard layout. (Note: The AltGr key, located immediately right of the Space bar, does not appear in this photo.)

Sun Microsystems keyboard, which labels the key as Alt Graph.

AltGr (also Alt Graph, Alt Graphic, Alt Graphics, Alt Car, or Right Alt) is a modifier key found on some computer keyboards and is primarily used to type characters that are unusual for the locale of the keyboard layout, such as currency symbols and accented letters. On a typical, IBM-compatible PC keyboard, the AltGr key, when present, takes the place of the right-hand Alt key. In OS X, the Option key has functions similar to the AltGr key.

单词	AltGR
释义	AltGR 英语百科 AltGr key AltGr (also Alt Graph, Alt Graphic, Alt Graphics, Alt Car, or Right Alt) is a modifier key found on some computer keyboards and is primarily used to type characters that are unusual for the locale of the keyboard layout, such as currency symbols and accented letters. On a typical, IBM-compatible PC keyboard, the AltGr key, when present, takes the place of the right-hand Alt key. In OS X, the Option key has functions similar to the AltGr key.
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AltGR

AltGr key