The NMVAR statement defines three symbols that reference macro variables.
ODS will convert the variable's values to numbers (stored as doubles) before
using them. References to the macro variables are resolved when ODS binds
the definition and the data component to produce an output object. The text
inside quotation marks provides information about the symbols. This information
becomes a part of the compiled table definition whereas SAS comments do not.
LOW, MEDIUM, and HIGH will contain the values to use as the determinants
of the style element that is used to render the cell. The values are provided
just before the DATA step that produces the report.
nmvar low 'Use default style.'
medium 'Use yellow foreground and bold font weight'
high 'Use red foreground and a bold, italic font.';