Use this dialog box to edit the levels and gradients for feature line, plot line, or survey figure segments to either a constant level or a constant gradient.
Select Constant Level to modify the points to a constant level. If no rows are selected it flattens the entire feature line using the level of the start point. If some rows are selected it flattens just those using the level of the first selected row. Select Constant Gradient to edit the selected rows to a constant gradient. The entire feature line gradient is modified if no rows are selected. It holds the start level and the end level and sets the points in between to the same gradient, in effect eliminating the gradient breaks.
Select Constant Level to select multiple rows for editing with the Raise/Lower commands.