def scroll_up() -> None:
    """Moves the window up by 100 lines.

    Args:
        None
    """
    global CURRENT_FILE, CURRENT_LINE, WINDOW
    if not _check_current_file():
        return
    with open(str(CURRENT_FILE)) as file:
        total_lines = max(1, sum(1 for _ in file))
    CURRENT_LINE = _clamp(CURRENT_LINE - WINDOW, 1, total_lines)
    output = _cur_file_header(CURRENT_FILE, total_lines)
    output += _print_window(
        CURRENT_FILE, CURRENT_LINE, WINDOW, return_str=True, ignore_window=True
    )
    print(output)
Moves the window up by 100 lines.

    Args:
        None
    
openhands/runtime/plugins/agent_skills/file_ops/file_ops.py