Halliday & Matthiessen (1999: 147):
Thus enhancing figures may be used to construe arrangements or orderings in space or time, such as chronologies, maps or structures. For example, the following extract from an account of the structure of skeletal muscles construes locations through enhancing figures:The fibrous connective tissue proteins within the tendons continue in an irregular arrangement around the muscle to form a sheath known as the epimysium (epi = above; my = muscle). Connective tissue from this outer sheath extends into the body of the muscle, subdividing it into columns, or fascicles (e.g., the "strings" in stringy meat) . Each of these fascicles is thus surrounded by its own connective tissue sheath, known as the porimysium (peri = around).Enhancing figures construing temporal and causal ordering play an important role in constructing knowledge in a metaphorical mode, as the following example illustrates:The divergence of impulses from the spinal cord to the ganglia, and the convergence of impulses within the ganglia, usually results in the mass activation of almost all of the postganglionic fibres.