Defines whether the 'Secondary Chainage' checkbox, located in the 'Create Structure' window, will be ticked by default when creating a structure.
Please note: This setting does not control the display of secondary chainage values in your annotations, this is defined by Name/Chainage Box. Secondary chainage values are not shown by default.
Off = The 'Secondary Chainage' checkbox will not be ticked, and the value entry box will be greyed out.
On = The 'Secondary Chainage' checkbox will be ticked, and the value entry box will be active.
Default Setting: 'Off'
Changing properties: If you want to change the option of this property, your Project Settings Administrator must request a project settings change.