Change Report: Version 3.0
This chapter lists the changes made to the Article Authoring Tag Set and to the entire Journal Archiving and Interchange Tag
Suite. This report contains two main sections:
- The first lists, for each element, the changes between Version 2.3 and Version 3.0.
- The second describes the version change from an implementor’s point of view: “this element was added to this class parameter
entity which changed these content models in these modules”, as an example. There is a general section describing overall
Suite changes and then a section specific to the Authoring Tag Set.
Version 3.0 of these Tag Sets is a departure from all previous releases. All prior versions of the Tag Sets have been document-backward
compatible, meaning that, although the Tag Sets have been modified several times, a document that was valid to one version
of the tag
sets was valid in all subsequent versions. All new elements and structures have, in previous versions, been made optional
so there was never a need to modify the backfile to be conformant to the latest Tag Set. In Version 3.0 for the first time,
changes have been made that
render documents that were valid to a prior version invalid to 3.0. The idea was to make the Tag Sets as logical, internally
consistent, and complete as possible going forward. Therefore, users of previous versions, if they choose to accept and integrate
Version 3.0, will require changes to the backfile to make it compliant or a before-3.0-and-after-3-0 divergence in their repository.
The decision to update to Version 3.0 is left up to each publisher and archive.
The type of changes that cause a document valid according to a previous version to be invalid in Version 3.0 include:
- Element name changes — An element that has been in the Tag Sets from the beginning has had its name changed, for example chem-struct-wrapper has been renamed to be <chem-struct-wrap>.
- New container elements — Many elements that were direct children of their parents are now grouped together in new container elements. For example,
translated titles and subtitles are now grouped into a single, overarching container so that a title and its subtitle can
be distinguished form all other title/subtitle pairs.
- Children grouped — Many elements that used to be direct children of their parents are now grouped together in new container
elements. For example, all translated titles used to be followed by all translated subtitles. Now, a translated title and
its subtitle are grouped into a single, overarching container so that a title and its subtitle can be distinguished from all
other title/subtitle pairs.
- Model tightening — When new features were added to previous versions of these Tag Sets, for example, when a new container
element was added to contain elements that had previously been direct children, then both the container and the direct children
were allowed in the model, for reasons of backward compatibility. This version removed such duplication and allows only the
grouped version, for example, the <copyright-statement> inside <article-meta> is now allowed only inside <permissions> and not also as a direct child of <article-meta>.
- Replacement elements — Some elements have been replaced by more general or more functional alternatives, for example:
- The simple grant-num and grant-sponsor were deleted in favor of a more full-bodied funding model that includes, for example, sponsorship statements, principal investigator,
and access charge information.
- The very specific <time-stamp> and <access-date> elements within a citation were replaced with a more general <date-in-citation> that can be used to tag all dates except publication dates within a citation. The date type of this new date should be identified
with a type attribute.
- The elements identifying a citation within a reference list have been renamed and remodeled. The only holdover from previous
Tag Sets is the <nlm-citation>, which will now be deprecated in favor of the <element-citation> element.
- Module name changes — For the first time, the DTD and schema module names include the version of the Tag Set being defined, for example “list3.ent” where the old name was “list.ent”.