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  2. Wikipedia:Manual of Style/Hidden text - Wikipedia

    en.wikipedia.org/.../Hidden_text

    Since consensus can change, it is inappropriate to use hidden text to try to prohibit making a certain edit merely because it would conflict with an existing local consensus. Disruptive behavior, such as vandalism, harassment, threats, or libel content; Using it as a talk page; Advertising WikiProjects.

  3. Hidden text - Wikipedia

    en.wikipedia.org/wiki/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.

  4. Redaction - Wikipedia

    en.wikipedia.org/wiki/Redaction

    Text on pages 12 to 14 of the PDF document were incorrectly redacted, and the covered text could be retrieved. [ 5 ] At the end of 2005, the NSA released a report giving recommendations on how to safely sanitize a Microsoft Word document.

  5. List of steganography techniques - Wikipedia

    en.wikipedia.org/wiki/List_of_steganography...

    Then, an innocuous cover text is modified in some way so as to contain the ciphertext, resulting in the stegotext. The letter size, spacing, typeface, or other characteristics of a cover text can be manipulated to carry the hidden message. Only a recipient who knows the technique used can recover the message and then decrypt it.

  6. Non-printing character in word processors - Wikipedia

    en.wikipedia.org/wiki/Non-printing_character_in...

    Non-printing characters or formatting marks are characters for content designing in word processors, which are not displayed at printing. It is also possible to customize their display on the monitor. The most common non-printable characters in word processors are pilcrow, space, non-breaking space, tab character etc. [1] [2]

  7. Steganography - Wikipedia

    en.wikipedia.org/wiki/Steganography

    The same image viewed by white, blue, green, and red lights reveals different hidden numbers. Steganography (/ ˌ s t ɛ ɡ ə ˈ n ɒ ɡ r ə f i / ⓘ STEG-ə-NOG-rə-fee) is the practice of representing information within another message or physical object, in such a manner that the presence of the concealed information would not be evident to an unsuspecting person's examination.