how to move to upper line

[Chang PilHun]

Not as ctrl+p or ctrl+n.
for example, if my terminal width is 80, the line of longer width than
80chars appears as two different lines.
'Ctrl+p' moves cursor two or more upper lines.(In fact, This is only one
line !)
I want move cursor 'only one line'.
In Vim, 'k' is equal to 'ctrl+p', and 'j' is equal to 'ctrl+n',
and I can do that by typing 'gk', 'gj'.

(I cannot find this in my o'reilly book...)
Sorry for my poor english. :-(