The addons are loaded in the H5P Editor for content types that are hardcoded in H5P Editor,h5peditor.class.php, as having WYSIWYG editor, currently these are 'H5P.CoursePresentation', 'H5P.InteractiveVideo' and 'H5P.DragQuestion'. They are loaded for all libraries when viewing H5P.
Addons can be identified by checking if there is a addTo property in the H5P librarys library.json file. In the database this value is stored in the column h5p_libraries.add_to.
An example of an addon is the 'H5P.MathDisplay' library.
No documentation was found on the H5P.org site
The addons are loaded in the H5P Editor for content types that are hardcoded in H5P Editor,
h5peditor.class.php, as having WYSIWYG editor, currently these are 'H5P.CoursePresentation', 'H5P.InteractiveVideo' and 'H5P.DragQuestion'. They are loaded for all libraries when viewing H5P. Addons can be identified by checking if there is aaddToproperty in the H5P libraryslibrary.jsonfile. In the database this value is stored in the columnh5p_libraries.add_to. An example of an addon is the 'H5P.MathDisplay' library. No documentation was found on the H5P.org site