numeric
The thickness override for the graphic primitive. When this is defined (i.e. not 0), the entity.thickness value overrides all thicknesses specified in the primitive’s other attributes, and thus draws the primitive with a constant thickness. If its value is 0 (the default value for new primitives), then thicknesses specified in other attributes are used.
The maximum thickness of an entity is 255.
Changing this value redraws the entity.