Clipboard
The place a computer holds what you copied, ready to paste somewhere else.
See it in FX engine. Make a picture, press Copy under Export, then paste it into a chat or a document.
In plain words
When you copy something, the computer keeps it in a hidden holding spot called the clipboard. Paste puts a copy of it wherever you are typing. The clipboard can hold text, a picture or both. It keeps only the last thing you copied. Web pages must ask your browser before they can put pictures there.