Unsourced material may be challenged and removed. The data is available to any application supporting the feature, thus allowing easy data how to cut and paste from a pdf file between applications.
This practice remained standard into the 1980s. Since moving a region of text required first removing it from its initial location and then inserting it into its new location various schemes had to be invented to allow for this multi-step process to be specified by the user. MS-DOS users used the “copy” and “move” commands. GUI text editors, word processors, and file system browsers. Computer-based editing can involve very frequent use of cut-and-paste operations. Visibly, “cut” text immediately disappears from its location.
Cut” files typically change color to indicate that they will be moved. The clipboard typically remains invisible. On most systems only one clipboard location exists, hence another cut or copy operation overwrites the previously stored information. The user selects a location for insertion by some method, typically by clicking at the desired insertion point. Some application programs provide a means of viewing, or sometimes even editing, the data on the clipboard.
Ctrl-Insert to copy and Shift-Insert to paste. The find buffer is system wide. The icon fades to show the transient “cut” state until it is pasted somewhere. Cutting a second file while the first one is cut will release the first from the “cut” state and leave it unchanged. Several editors allow copying text into or pasting text from specific clipboards, typically using a special keystroke-sequence to specify a particular clipboard-number.