Mention small of fixed-point types for machine representation

Author: gusthoff

content/courses/advanced-ada/parts/data_types/numerics.rst

@@ -3362,10 +3362,11 @@ won't compile if your target architecture doesn't support 128-bit data types.)
 Machine representation of fixed-point types
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-In this section, we discuss how fixed-point types are typically
-represented in actual hardware. For that, we can use
-:ref:`overlays <Adv_Ada_Address_Aspect_Overlay>` to retrieve the actual integer
-representation on the machine of objects of the fixed-point type.
+In this section, we discuss how fixed-point types are represented in actual
+hardware. Typically, the machine representation of objects of fixed-point type
+consists of integer values scaled by the *small* of the type. To retrieve
+the actual integer representation, we can use
+:ref:`overlays <Adv_Ada_Address_Aspect_Overlay>`.
 
 
 .. _Adv_Ada_Decimal_Fixed_Point_Machine_Representation: