If the user has added a lot of elements, it is useful to align them once they are added to accomplish a tidier scheme.
If the horizontal line alignment is incorrect, select the desired items and click Edit → Align elements. This command will make the lines horizontal and will make the scheme easier to read.
If the vertical alignment of the elements is needed, select the items that need to be aligned and click Edit → Align vertically. The vertical alignment will be based on the average position of the selected elements.