`i<Enter><Esc>` works on empty file
`i<BS>` at beginning of line leaves the cursor at join`i<BS>` at beginning of line leaves the cursor at join
`:q!<Enter>` exits Avi.`:q!<Enter>` exits Avi.
`oxy<Esc>` inserts a line below`oxy<Esc>` inserts a line below
`:wq` writes the file`:wq` writes the file
`:wq` exits avi`:wq` exits avi