    class
    	WEL_UNIT_CONVERSION

    General
    	cluster: wel
    	description: "Unit conversion."

    Ancestors
    	ANY
    	WEL_CAPABILITIES_CONSTANTS
    	WEL_DT_CONSTANTS

    Queries
    	Himetric_per_inch: INTEGER_32
    	himetric_to_pixel (a_size_in_himetric: WEL_SIZE): WEL_SIZE
    	logical_to_pixel (hdc: WEL_DC; lo: INTEGER_32): INTEGER_32
    	logical_to_point (hdc: WEL_DC; lo: INTEGER_32): INTEGER_32
    	map_loghim_to_pixel (x, ppli: INTEGER_32): INTEGER_32
    	map_pixel_to_loghim (x, ppli: INTEGER_32): INTEGER_32
    	pixel_to_himetric (a_size_in_pixel: WEL_SIZE): WEL_SIZE
    	pixel_to_logical (hdc: WEL_DC; pi: INTEGER_32): INTEGER_32
    	pixel_to_point (hdc: WEL_DC; pi: INTEGER_32): INTEGER_32
    	point_to_logical (hdc: WEL_DC; pt, divisor: INTEGER_32): INTEGER_32
    	point_to_pixel (hdc: WEL_DC; pt, divisor: INTEGER_32): INTEGER_32