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An x mark (also known as a cross, x, ex, exmark or into mark〔Due to its similarity to the multiplication sign.〕) is a mark (x, ×, X, (unicode:✕), (unicode:☓), (unicode:✖), (unicode:✗), (unicode:✘), etc.) used to indicate the concept of negation (for example "no, this has not been verified" or "no, I don't agree") as well as affirmation (for example in election ballot papers or in x marks the spot). It is often used opposite the check mark or tick (or the O mark used in Japan, Korea and Taiwan). In some areas it's common for people to check a square box with a cross rather than a check mark, while in others the check mark (✓) or even a v mark is used. It is also used as a replacement for a signature for a person who is blind or illiterate and thus cannot write his or her name. Typically, the writing of an X used for this purpose must be witnessed to be valid. As a verb, to ex (or x, notably one of the shortest English words) off/out or to cross off/out means to add such a mark. It is quite common, especially on printed forms and document, for there to be squares in which to place x marks, or interchangeably checks. It is also traditionally used on maps to indicate locations, most famously on treasure maps. ==Unicode== Unicode provides various related symbols, including: The (unicode:✗) mark is generally rendered with a less symmetrical form than the following cross-shaped mathematical symbols: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「x mark」の詳細全文を読む スポンサード リンク
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