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Void pantograph. In security printing, void pantograph refers to a method of making copy-evident and tamper-resistant patterns in the background of a document. Normally these are invisible to the eye, but become obvious when the document is photocopied. Typically they spell out "void", "copy", "invalid" or some other indicator message.
Hidden file and hidden directory. In computing, a hidden folder (sometimes hidden directory) or hidden file is a folder or file which filesystem utilities do not display by default when showing a directory listing. They are commonly used for storing user preferences or preserving the state of a utility and are frequently created implicitly by ...
A substitute check (also called an Image Replacement Document or IRD) is a negotiable instrument that is a digital reproduction of an original paper check.As a negotiable payment instrument in the United States, a substitute check maintains the status of a "legal check" in lieu of the original paper check, as authorized by the Check Clearing for the 21st Century Act (the Check 21 Act).
Using the IRS2Go app, filers can check their refund status, make a tax payment and get free tax help. You can also use the app to follow the IRS on social media platforms and sign up to receive ...
Checkwiki helps clean up syntax and other errors in the source code of Wikipedia by: Eliminating errors in the wiki syntax, such as missing close tags or brackets; Checking for accessibility issues, such as small print or heading problems; Correcting, deleting or moving code that does not follow conventions, such as the position of references ...
Miscellaneous Symbols is a Unicode block (U+2600–U+26FF) containing glyphs representing concepts from a variety of categories: astrological, astronomical, chess, dice, musical notation, political symbols, recycling, religious symbols, trigrams, warning signs, and weather, among others.
This help page is a . The markup language called wikitext, also known as wiki markup or wikicode, consists of the syntax and keywords used by the MediaWiki software to format a page. (Note the lowercase spelling of these terms. [a]) To learn how to see this hypertext markup, and to save an edit, see Help:Editing.
The check digit is there to check whether the main part of the number is correct. If the SBN is failing to validate, it is likely that there is a typo in the main part of the number. In this case, recalculating the check digit results in an apparently valid ISBN that leads to the wrong source (or to nowhere).