Nested Loops And Circles

Multiple clipboards

Several GUI editors allow copying text into or pasting text from specific clipboards, typically using a special keystroke-sequence to specify a particular clipboard-number.

Clipboard managers can be very convenient productivity-enhancers by providing many more features than system-native clipboards.
Thousands of clips from the clip history are available for future pasting, and can be searched, edited, or deleted. Favorite clips that a user frequently pastes (for example, the current date, or the various fields of a user's contact info) can be kept standing ready to be pasted with a few clicks or keystrokes.

Similarly, a kill ring provides a LIFO stack used for cut-and-paste operations as a type of clipboard capable of storing multiple pieces of data.^[4] For example, the Emacs text-editor developed by Richard Stallman provides a kill ring.^[5] Each time a user performs a cut or copy operation, the system adds the affected text to the ring. The user can then access the contents of a specific (relatively numbered) buffer in the ring when performing a subsequent paste-operation. One can also give kill-buffers individual names, thus providing another form of multiple-clipboard functionality.