Normative text is displayed in black. Archaic spellings and capitalization have been modernized. Annotation to distinguish changes from version 1.27 has been dropped, on the grounds that it was visually confusing and tended to steer reviewers away from careful review of the original test of version 1.27.
Rationale is displayed in red. Rationale is non-normative, but is provided to call out differences from release 1.27, better define terms of art, offer the reasoning behind the normative text, and offer other clarifications.