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  2. Redaction - Wikipedia

    en.wikipedia.org/wiki/Redaction

    Notations with leader lines at top and bottom cite statutory authority for not declassifying certain sections. Click on the image to enlarge. Printed documents which contain classified or sensitive information frequently contain a great deal of information which is less sensitive.

  3. Printer tracking dots - Wikipedia

    en.wikipedia.org/wiki/Printer_tracking_dots

    Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...

  4. Intentionally blank page - Wikipedia

    en.wikipedia.org/wiki/Intentionally_blank_page

    The document has 80 printable pages, and content ends on page 77. In digital documents, pages are intentionally left blank so that the document can be printed correctly in double-sided format, rather than have new chapters start on the backs of pages. Intentionally blank pages have also been used in documents distributed in ring binders. The ...

  5. Blueprint - Wikipedia

    en.wikipedia.org/wiki/Blueprint

    This technique produces blue lines on a white background. The drawings are also called blue-lines or bluelines. [12] [13] Other comparable dye-based prints were known as blacklines. Diazo prints remained in use until they were replaced by xerographic print processes. Xerography is standard copy machine technology using toner on copy paper.

  6. Document comparison - Wikipedia

    en.wikipedia.org/wiki/Document_comparison

    The software-based document comparison process compares a reference document to a target document, and produces a third document which indicates (by colored highlighting or by differing font characteristics) information (text, graphics, formulas, etc.) that has either been added to or removed from the reference document to produce the target ...

  7. Margin (typography) - Wikipedia

    en.wikipedia.org/wiki/Margin_(typography)

    The margin helps to define where a line of text begins and ends. When a page is justified the text is spread out to be flush with the left and right margins. When two pages of content are combined next to each other (known as a two-page spread), the space between the two pages is known as the gutter. [2] (Any space between columns of text is a ...

  8. Trap (printing) - Wikipedia

    en.wikipedia.org/wiki/Trap_(printing)

    In printing, trap expresses the degree to which ink already printed on a substrate accepts another layer printed on top of it compared to how well the substrate (e.g., paper) accepts that ink. However, in the era of prepress software, the term came to refer to compensation for misregistration (when two layers of ink are not perfectly aligned ...

  9. Security printing - Wikipedia

    en.wikipedia.org/wiki/Security_printing

    The advantage of a digital press is that in a single pass through the printer a void pantograph with all the variable data can be printed on plain paper. Copy-evident paper, sometimes marketed as ‘security paper’, is pre-printed void pantograph paper that was usually produced on an offset or flexographic press. The quality of the void ...