Scaled
If you would like your fill styles to be a fixed scale (real world distance) select Scaled. For floorplans, this value should be the width of a tile in drawing units. For consistency, each tile should be the same number of pixels/unit, and this value should be set in Display Speed Settings, Fill Style Resolution.
For 1000x800 overland maps, we use a scale of 50 based on 500 x 500 pixel tiles. This gives us an effective resolution on a standard page of about 800dpi. You should scale this value up or down according to the template size.