UO.LTargetTile
From OpenEUO
UO.LTargetTile
⇔ Returns the tile last targeted. The number in this variable is determined by the graphic of the tile. You can also write to this variable and use it in conjunction with UO.Macro(22) (LastTarget), which will target this tile as if it was clicked with the mouse.
Note: UO.LTargetKind must be set to 3 for UO.Macro(22) to utilize UO.LTargetTile.
