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An example of a U.S. classified document; page 13 of a United States National Security Agency report [31] on the USS Liberty incident, partially declassified and released to the public in July 2003. The original overall classification of the page, "Top Secret" code word UMBRA, is shown at top and bottom. The classification of individual ...
A typical classified document. Page 13 of a U.S. National Security Agency report [1] on the USS Liberty incident, partially declassified and released to the public in July 2004. The original overall classification of the page, "top secret", and the Special Intelligence code word "umbra", are shown at top and bottom.
PNG offers a variety of transparency options. With true-color and grayscale images either a single pixel value can be declared as transparent or an alpha channel can be added (enabling any percentage of partial transparency to be used). For paletted images, alpha values can be added to palette entries.
Iraq War documents leak: A WikiLeaks disclosure of a collection of 391,832 United States Army field reports. [10] [11] [12] United States diplomatic cables leak: A WikiLeaks disclosure of classified cables that had been sent to the U.S. State Department by 274 of its consulates, embassies, and diplomatic missions around the world. [13]
This category is for articles about documents that were once classified, but have become known or partially known to the public. Articles on the classification process and its implications belong in the parent category, Category:Classified information,
Classified information in the United Kingdom is a system used to protect information from intentional or inadvertent release to unauthorised readers. The system is organised by the Cabinet Office and is implemented throughout central and local government and critical national infrastructure .
One color entry in a single GIF or PNG image's palette can be defined as "transparent" rather than an actual color. This means that when the decoder encounters a pixel with this value, it is rendered in the background color of the part of the screen where the image is placed, also if this varies pixel-by-pixel as in the case of a background image .
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