see attachments - they should be self-explanatory.
For a centre-line "symbol" (?), right-click the Line Tool to enable it's Pen properties, then select type of line you require.
I am not aware of a dedicated C/L symbol, if that's what you're after.
« Last Edit: June 12, 2017, 09:58:12 AM by Tim Stewart »
You can design without engineering, but you cannot engineer without design.
Using Win 10 with Designer 2017 and TurboCAD Pro. Plat. 2016/2017 + Lightworks (64-bit versions).