Windows clipboard

The Windows clipboard holds data being temporarily copied/cut and pasted within programs running under the Microsoft Windows operating system. There are various sub-formats of it to handle different sorts of text, graphical, and other data. While this is usually just held in memory, sometimes it may be saved in files with a .clp extension.

Identification
.clp files begin with a 2-byte signature. Known signatures:
 * (Windows 3.1)
 * (NT)
 * ("BK")

Specifications
Documentation of the .clp file format is lacking, but ReactOS is open source, and appears to support at least one version of the standard format (WriteClipboardFile in clipbrd/fileutils.c).

Software
For .clp files:
 * Clipboard Viewer / ClipBook Viewer - Included with Microsoft Windows prior to Vista.
 * XnView - Can read graphical files.
 * IrfanView - Can read graphical files.

Sample files

 * https://telparia.com/fileFormatSamples/image/windowsClipboard/
 * https://telparia.com/fileFormatSamples/image/windowsClipboard/

Links

 * Standard Clipboard Formats
 * How can I get an image out of the clipboard without losing the alpha channel in .NET?
 * How do I read a jpg or png from the windows clipboard in python and vice versa?
 * Win32::Clipboard Perl module