Unicode Control Characters

Many Unicode control characters are used to control the interpretation or display of text, but these characters themselves have no visual or spatial representation. For example, the null character (U+0000 ) is used in C-programming application environments to indicate the end of a string of characters. In this way, these programs only require a single starting memory address for a string (as opposed to a starting address and a length), since the string ends once the program reads the null character.

Read more about Unicode Control Characters:  ISO 6429 Control Characters (C0 and C1), Unicode Introduced Separators, Language Tags, Interlinear Annotation, Bidirectional Text Control, Variation Selectors

Famous quotes containing the words control and/or characters:

    ““Have we any control over being born?,” my friend asked in despair. “No, the job is done for us while we’re sleeping, so to speak, and when we wake up everything is all set. We merely appear, like an ornate celebrity wheeled out in a wheelchair.” “I don’t remember,” my friend claimed. “No need to,” I said: “what need have us free-loaders for any special alertness? We’re done for.””
    —Marvin Cohen, U.S. author and humorist. The Self-Devoted Friend, New Directions (1967)

    “Though they be mad and dead as nails,
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    Break in the sun till the sun breaks down,
    And death shall have no dominion.”
    —Dylan Thomas (1914–1953)