There are two important components of tmux that we are yet to discuss in more detail, namely, Copy mode and paste buffers.
Copy mode is a mode in tmux that we can switch to; it allows us to select the text that already appears on the screen and copy it. Also, it allows us to move our cursor anywhere on the screen, even to places that have moved off the screen.
When an item is copied from Copy mode, it ends up in the paste buffer. As its name implies, this is a buffer that exists to hold anything that is copied so it can be pasted later.
Here is a quick summary of the features we will cover in this chapter: