Modification cumulative delta axis Y

Hello

Would it be possible to review the zoom possibilities of the cumulative delta. Despite the recent modification of this indicator, it is still not possible to zoom sufficiently on the Y axis.

It would be great to fix this problem.

Would it be possible to add the possibility of drawing oblique trend lines on the cumulative delta?

For the moment, it's only possible to draw horizontal lines.

Thanks in advance to the Atas team.