Notes about the TEXTCLIPPING file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The TEXTCLIPPING file type is primarily associated with 'OS X Finder' by Apple Inc.. OS X on the Macintosh produces a .TEXTCLIPPING file when you drag text onto a Finder window. To copy the contents of these files open a TextEdit document and drag/drop the .TEXTCLIPPING file onto that open document (it won't work if you attempt to open the file in TextEdit; you have to drag/drop onto an open document).