Using your newly created file as a guinea pig, and the following list of vi commands try to re-edit the file, make changes, additions, and move text around. H move the cursor to the first line in the window. M move the cursor to the middle line in the window. L move the cursor to the last line in the window. O open an empty line above the current line and change vi from keystroke mode to insert mode.
G move the cursor to a particular line.
G by itself causes the cursor to go to the last line in the buffer. G causes the cursor to go to the nth line in the buffer. Pressing the y key causes the specified object to be yanked into a supplementary buffer. Vi has many ways to specify an object. Vi has more than one supplementary buffer, the particular one used in this example is known as the unnamed buffer.