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Hidden text. Hidden text is computer text that is displayed in such a way as to be invisible or unreadable. Hidden text is most commonly achieved by setting the font colour to the same colour as the background, rendering the text invisible unless the user highlights it. Hidden text can serve several purposes. Often, websites use it to disguise ...
Whitespace character. A whitespace character is a character data element that represents white space when text is rendered for display by a computer . For example, a space character ( U+0020 SPACE, ASCII 32) represents blank space such as a word divider in a Western script . A printable character results in output when rendered, but a ...
This is a list of letters of the Latin script. The definition of a Latin-script letter for this list is a character encoded in the Unicode Standard that has a script property of 'Latin' and the general category of 'Letter'. An overview of the distribution of Latin-script letters in Unicode is given in Latin script in Unicode.
Left-to-right mark. The left-to-right mark ( LRM) is a control character (an invisible formatting character) used in computerized typesetting of text containing a mix of left-to-right scripts (such as Latin and Cyrillic) and right-to-left scripts (such as Arabic, Syriac, and Hebrew ). It is used to set the way adjacent characters are grouped ...
Invisible ink. A coded letter from Benedict Arnold, originally written in invisible ink. Handwriting by Peggy Shippen Arnold is interspersed with coded communication in Arnold's hand. Invisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and ...
Control character. In computing and telecommunication, a control character or non-printing character ( NPC) is a code point in a character set that does not represent a written character or symbol. They are used as in-band signaling to cause effects other than the addition of a symbol to the text.
A Unicode character is assigned a unique Name (na). [1] The name is composed of uppercase letters A–Z, digits 0–9, hyphen-minus (-) and space ( ). Some sequences are excluded: names beginning with a space or hyphen, names ending with a space or hyphen, repeated spaces or hyphens, and space after hyphen are not allowed.
In classical cryptography, a null is an extra character intended to confuse the cryptanalyst.In the most common form of a null cipher, the plaintext is included within the ciphertext and one needs to discard certain characters in order to decrypt the message (such as first letter, last letter, third letter of every second word, etc.) [1] Most characters in such a cryptogram are nulls, only ...