An enum type declaring tile map axes used by the tilemapper: XZ, YZ, XY, and XYPlus. Two members (XY and XYPlus) have Title attributes likely for editor display.
using Sandbox;
namespace Saandy.Tilemapper;
public enum TileMapAxis
{
XZ,
YZ,
[Title( "XY-" )]
XY,
[Title( "XY+" )]
XYPlus
}