Solve a sentence of vim code

Question

Find out how this line of code works:

imap <C-L> @@@<esc>hhkywjl?@@@<CR>P/@@@<cr>3s

Answer 1

This is a mapping of insertion mode. It seems that the purpose is to copy a word above the cursor to the current position.
The general principle is this:

• @@@ This is actually a place holder. Convenient for the next two positioning (? and /). After understanding this, the rest will...

• hhk Move the cursor to the word above

• yw Copy

• P Paste above the current line, which is the line where the cursor is initially.

• 3s is to delete those three 3s 是删除那三个 @@@

I won’t explain everything else one by one.

Answer 2

I have never seen such strange syntax. . .