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  2. Watermark - Wikipedia

    en.wikipedia.org/wiki/Watermark

    Stamp paper watermarks also show various designs, letters, numbers and pictorial elements. The process of bringing out the stamp watermark is fairly simple. Sometimes a watermark in stamp paper can be seen just by looking at the unprinted back side of a stamp. More often, the collector must use a few basic items to get a good look at the watermark.

  3. Security printing - Wikipedia

    en.wikipedia.org/wiki/Security_printing

    True watermark. A true watermark is a recognizable image or pattern in paper that appears lighter or darker than surrounding paper when viewed with a light from behind the paper, due to paper density variations. A watermark is made by impressing a water coated metal stamp or dandy roll onto the paper during manufacturing.

  4. List of typographical symbols and punctuation marks

    en.wikipedia.org/wiki/List_of_typographical...

    Chemical symbol – Abbreviations used in chemistry; Chinese punctuation – Punctuation used with Chinese characters; Currency symbol – Symbol used to represent a monetary currency's name; Diacritic – Modifier mark added to a letter (accent marks etc.) Hebrew punctuation – Punctuation conventions of the Hebrew language over time

  5. Postage stamp paper - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_paper

    When colored paper is used for the stamp, the ink colors are listed first and then the paper's color is listed next in italics. Sometimes the paper is described as ordinary, which simply means that the common paper of the period was used. Coated paper is usually not listed but may be surmised by the printing process used to print the stamp.

  6. List of iPad accessories - Wikipedia

    en.wikipedia.org/wiki/List_of_iPad_accessories

    The iPad is an iPadOS-based (previously iOS) line of tablet computers designed and developed by Apple Inc.; it has a wide variety of accessories made by Apple available for it, including a screen cover specifically for the respective models of iPad called Smart Cover, as well as a number of accessories to allow the iPad to connect to other devices, some of which enable non-touchscreen input.

  7. The best sunrise alarm clocks of 2025 - AOL

    www.aol.com/lifestyle/best-sunrise-alarm-clocks...

    In fact, the clock doesn’t require an app to use, which I actually like, but the lack of Bluetooth connectivity and app control can be cons, depending on your preferences. (In my opinion, the ...

  8. Super Micro to hire new CFO, says independent review ... - AOL

    www.aol.com/news/super-micro-hire-cfo-says...

    In late July, Super Micro's auditor at the time, Ernst & Young (EY), raised concerns about the company's governance, transparency and internal control over financial reporting, prompting its board ...

  9. Digital watermarking - Wikipedia

    en.wikipedia.org/wiki/Digital_watermarking

    Often used by a watermark designer is the evaluation of single properties to show, for example, an improvement. Mostly, end-users are not interested in detailed information. They want to know if a given digital watermarking algorithm may be used for their application scenario, and if so, which parameter sets seems to be the best.