figure 1.
The Axis Const Line Collection Editor is used to edit the constant lines displayed by the axes.
Commands
Add Const Line: Adds a new const line.
Delete Const Line: Deletes the selected constant line.
Const Line Appearance
These properties define the appearance of the constant line.
General Const Line Properties
This control group contains properties defining the axis on which the begin and end values are scaled (when the EnableBeginEnd property is set to true), as well as the value to which this constant line is associated.