High Quality Content by WIKIPEDIA articles! textClipping is an extension used by Macintosh computers for strings of text, used since Mac OS 9 was released. When a string of text is selected and dragged to the desktop of a Macintosh computer, the computer automatically converts it into a .textClipping file. The icon formed can conveniently be dragged to any text box to replicate the exact text, sans formatting. The selected text becomes plain text, and the font becomes Lucida Grande point 13, the main system font for Mac OS X.