Grouped bar graphs usually present the information in the same order in each grouping. HLOD avoids the problem by grouping different objects together. Programming languages often categorize tokens as identifiers, operators, grouping symbols, or by data type. It is recognized as a distinct grouping in many cultures. The group means could be modeled as fixed or random effects for each grouping. Organs are then formed by the functional grouping together of multiple tissues. Descending precedence refers to the priority of the grouping of operators and operands. So using morphology within the genus becomes problematic for further subgeneric grouping. Rogers classifies tracking as one of ten types of grouping. The wholes are structured and organized using grouping laws. Domergue Sumien proposes a slightly different supradialectal grouping. The complementary accent color creates an interesting contrast against the dominant color grouping. A domain is a logical grouping of computers. Tracking differs from ability grouping by scale and permanence. Organisation was according to clan grouping and social class.