Question: vim config

[Suren Lockwood]

Is there mysterious script that has been missed but used in vimrc

" Runs a script that cleans out tex build files whenever I close out of a .tex file.
	autocmd VimLeave *.tex !texclear %

https://github.com/LukeSmithxyz/voidrice/blob/master/.config/nvim/init.vim

can someone tell me what is VimLeave