.:: USAGE ::.

RIGHT: Move the cursor right by 1 position.
LEFT: Move the cursor left by 1 position.
UP: Move the cursor up by 1 line (the cursor's horizontal position should be preserved, or move to the end of the line if the line is shorter).
DOWN: Move the cursor down by 1 line (the cursor's horizontal position should be preserved, or move to the end of the line if the line is shorter).
^ (or 0): Move the cursor to the beginning of the line.
$: Move the cursor to the end of the line.
w: Move the cursor to the end of the word to the right of the cursor (if the cursor is at the end of a word, move to the end of the next word).
b: Move the cursor to the beginning of the word to the left of the cursor (if the cursor is at the beginning of a word, move to the beginning of the previous word).
gg: Go to the beginning of the file.
G: Go to the end of the file.
NG: Go to line number N. For example, 10G moves to the 10th line.
PG_UP: Move up one screen.
PG_DOWN: Move down one screen.
x: Delete the character after the cursor.
diw: Delete the word under the cursor, including the space to the right.
dd: Cut the current line.
yy: Copy the current line.
yw: Copy the word under the cursor.
p: Paste after the cursor.
/text<CR>: Search for the string text from the cursor to the end of the file. If the string is found, move the cursor to the beginning of the string.
?text<CR>: Search for the string text from the cursor to the beginning of the file. If the string is found, move the cursor to the beginning of the string.
n: Repeat the search.
N: Repeat the search in the reverse direction.
i: Insert text before the cursor.
I: Move to the beginning of the line and start inserting text.
A: Move to the end of the line and start inserting text.
S: Delete the contents of the line and start inserting text.
r: Replace one character under the cursor.
o filename: Open the file filename.
x: Save the current file and exit.
w: Save the current file.
w filename: Save to filename.
q: Quit. If the file has been modified, quitting is only possible with q!.
q!: Quit without saving.
wq!: Save the current file and quit.
number: Go to line number.
h: Display help for commands.