1. Add @from and @to to each biblScope that is a page range to show a good way of making page ranges more explicit so that people aren't tempted to use type="fpage" and type="lpage" (which is especially important in page ranges where initial digits of the end of the range are omitted).
2. Change "Punctuation should not appear between the elements within a structured bibliographic entry encoded with biblStruct or biblFull" to "Punctuation must not appear between the elements within a structured bibliographic entry encoded with biblStruct or biblFull"
3. In "Des Minnesangs Frühling" example, change <date when="1977"/> to <date>1977</date>. While there are good reasons why you might do dates in a highly structured bibliography not encoded from a source document, the rest of this citation appears to be of an encoded source document, so it's misleading to use this markup in such an unexpected way.
(1) have added some examples. We should probably discuss somewhere what @from and @to mean if only one of them is present
(2) The use of "should" to indicate highly recommended/mandatory is fairly consistent throughout the Guidelines
(3) as you like. changed. Rev 9202
(1) Not sure this is necessary since @from and @to can be used on various elements, and I think the attribute definitions (at least for biblScope) are clear enough on how to interpret these attributes. Possible places to add this discussion are (a) #COBICOB (where discuss biblScope), (b) the element spec for biblScope, or (c) the specs for all elements and attribute classes which contain @from and @to.
2) Hrmph. I've raised a separate ticket about this: https://sourceforge.net/p/tei/bugs/548/
3) Thanks.
Impelemented (2) at http://sourceforge.net/p/tei/code/12525/ . Now closing this ticket.