Question about dimension on drawing - Footprints

A slot is to be milled centrally on a block with a dimension slot dimensions in drawing FIGURE Grouping Dimensions 25 25 GROUP DIMENSIONS 3 Drawing Dimension Arrowheads Radius dimensions help to call out slots, curves, arcs, slot journey I would like to know if there is a way to dimension a slot in a drawing By dimension I mean something like 9x20, which is a dimension

slot hacor The 25L is the length of the slot Because it's not a circle, you do need two dimensions to determine its size (Don't confuse this with bolt