Retinal detachment occurs when the light-sensing layer inside your eye, the retina, detaches from the underlying pigmented tissue layer that provides it oxygen and nutrients. Retinal detachment can happen spontaneously with no obvious or underlying cause.
Thus, vertical analysis is nothing but the comparative analysis of an economic statement, in which all baseline items on an economic statement are shown as a fraction of a further item.
The vertical line is the point where the critical value (alpha) is. We reject the null if our sample has a P-value of less than alpha (to the right of the line) and we fail to reject the null if our sample has a p-value greater than alpha (to the left of the line).