Ruby 1.8.7 リファレンスマニュアル > ライブラリ一覧 > cursesライブラリ > Cursesモジュール > scrl
scrl(num) -> bool
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Scrolls the current window Fixnum +num+ lines. The current cursor position is not changed.
For positive +num+, it scrolls up.
For negative +num+, it scrolls down.