Phrase-level encoding refers to elements which are used within paragraphs and other similar elements: that is, encoding which identifies specific words or phrases. Typical kinds of phrase-level encoding include things like names, dates, and foreign words.
The WWP provides phrase-level encoding in all parts of the “original flow” of the text: that is, the parts of the text which carry its primary content. This includes all of the discursive parts of the text (including prefatory material, advertisements, title pages, etc.) and all notes, but it excludes the following: tables of contents and indices, catchwords, running heads, and other places which are part of the apparatus of the book’s reference system. Any part of the text which duplicates and merely refers to some other primary portion of the text does not carry phrase-level encoding.