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G - jump to the end of the file
gg - jump to the beginning of the file
u - undo
Ctrl + r - redo
I - start typing start of the line
i - start typing behind the cursor
a - start typing in front of the cursor
:set wrap = sets word wrapping, this is the default
:set nowrap = disable word wrapping
:set linebreak = useful for note taking, wraps sentence rather than words