att.global.analytic provides additional global attributes for associating specific analyses or
interpretations with appropriate portions of a text. [17.3 Spans and Interpretations]
one or more valid identifiers of one or more interpretive elements
(usually fs or interp), separated by white space.
Note
When multiple values are given, they may reflect either
multiple divergent interpretations of an ambiguous text, or multiple
mutually consistent interpretations of the same passage in different
contexts.