Copy and paste Vim

The clipboard-related content in the Vim Help document is as follows:
Vim has 12 clipboard, which are 0, 1, 2,..., 9, A, ", and +. You can use the: Reg command to view the content of each clipboard. In vim, simply copy Y to the "(double quotation marks) clipboard. P is also used to paste the content in the clipboard;

To copy Vim content to a clipboard, You need to exit the editing mode. after entering the normal mode, select the content to be copied, and then press "NY" to complete the copy, n is the clipboard number (note that double quotation marks are followed by the clipboard number and then followed by Y). For example, to copy the content to clipboard a, select the content and press "ay, there are two points to note:
"No. Clipboard (temporary clipboard) is special. Press Y to copy it to the clipboard. Press P to paste the content in the clipboard;
+ The No. Clipboard is a system clipboard. After you copy the content to the clipboard with "+ Y", you can use Ctrl + V to paste it into other documents (such as Firefox and gedit). Similarly, to copy the content copied by pressing CTRL + C or right-click elsewhere to VIM, press "+ P in normal mode;

To paste the content in a clipboard of VIM, You need to exit the editing mode. In normal mode, press "NP, where N is the clipboard number, as described above, you can press "5 p to paste the content in the 5 th clipboard, or press" + P to paste the content in the global clipboard of the system.