[align=center][color=!shortcuts][insert=menu_location:mesh.show_center_line]
[insert=menu_shortcut:mesh.show_center_line]
[/color][align=left]
When active, a reference line is drawn at X=0, Z=0, extending 10000 units in both directions on the Y axis. If additional lines in other positions or orientations are desired, they can be added in the [link=guides_and_grid]Guides and Grid[/link] window.