Halliday & Matthiessen (1999: 381, 384):
Table 9(2) represents the intersection of instantiation and stratification, providing a schematic map of the overall semiotic space (the table has been adapted from a fuller version presented in Halliday, 1995). We have shown the ideational 'slice' of the overall picture in bold italics. (We have left the phonological cells unspecified … but the cline of instantiation is equally important at this lowest stratum of language.)
