Arranging Tiles

To drop a tile, press the left mouse button and drag the blank tile to where you want it placed.  Note that the tile will move "up" and "down" if there are tiles already in place, in order to make stacks.

When you release the mouse button, the tile will be placed, face up, in the layout area.  Any tile that becomes blocked (unavailable) by the placement will be turned face down to indicate this fact.

To remove a tile, right click on the tile to be removed.  This tile will be removed from the layout, and any tile that is freed will be turned face up.  Note that a face down tile can be removed from within the editor.