Migrating to release 2.4 To 2.4 In DITA-OT 2.4, the transformation was refactored as an independent plug-in that no longer depends on the plug-in.
This topic provides a summary of changes in DITA-OT 2.4 that may require modifications to custom stylesheets or plug-ins. For more information on changes in this release, see the .
HTML5

  • The transformation introduced in release 2.0 as part of the plug-in was moved to a separate plug-in in release 2.2, but that version of the transformation still depended on the plug-in for certain common processing.

    In release 2.4, all dependencies between and have been removed to ensure that HTML5 processing can be further refactored in the future without affecting XHTML output, or other HTML-based transformations such as , or .

    Customizations that extended the previous HTML5 output under the plug-in (as provided in releases 2.0 and 2.1) or the plug-in that shipped with release 2.2 will need to be refactored to build on the new HTML5 plug-in.

  • Note title processing was revised in release 2.2 to include a common note__title class for note elements of all types. The legacy {$type}title classes (such as .notetitle, .cautiontitle, .tiptitle, etc.) were included in release 2.2 for backwards compatibility, but have now been removed in release 2.4.

    Stylesheets that apply formatting overrides to note titles should be revised to replace the deprecated class selectors with the equivalent descendant selectors, for example:

    • .note_note .note__title
    • .note_caution .note__title
    • .note_tip .note__title
Legacy plug-ins removed

DITA-OT 2.4 no longer includes the following legacy transformation plug-ins in the default distribution:

Legacy plug-ins Plug-in Source code location DocBook Eclipse Content OpenDocument Text Word RTF
If necessary, legacy plug-ins may be re-installed from earlier DITA-OT distributions, but they are no longer actively maintained or supported by the core toolkit committers. The source code is available on GitHub for anyone interested in maintaining the plug-ins for use with future toolkit versions.