File Open
vi filename - Open or create a file
vi - Open a new file to be named later
vi -r filename - Recover crashed file
view filename - Open file read-only
Insert Characters and Lines
a - Insert characters right of the cursor
A - Insert characters end of the line
i - Insert characters left of the cursor
I - Insert characters beginning of the line
o - Insert line below the cursor
O - Insert line above the cursor
Delete Text in file
x - Delete the character at the cursor
X - Delete the character to the left of the cursor
dw -Delete word (or part of a word to the right of the cursor)
dd - Delete the current line
D - Delete part of the line to the right of cursor
dG - Delete to end of file
d1G - Delete - beginning of the file to cursor
:1,4 d - Delete lines 1 to 4
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