Cancel character
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In telecommunications and character encoding, the term cancel character refers to a control character which may be either of:
- "CAN", "Cancel", U+0018, or
^Xused to indicate that the data with which it is associated are in error or are to be disregarded. Exact meaning can depend on protocol. For example:- In some journalistic text transmission formats, it signifies that the preceding word should be deleted; it is sometimes called "Kill Word" ("KW") in this context.[1]
- In some Videotex formats, it stops any running macros.[2][3] In others, it clears the current line after the cursor position (compare Template:Control code link).[4]
- "CCH", "Cancel Character", U+0094, or
ESC Tused to erase the previous character. This character was created as an unambiguous alternative to the much more common backspace character ("BS", U+0008), which has a now mostly obsolete alternative function of causing the following character to be superimposed on the preceding one.
References
- Public Domain This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C".
