On these pages we will often group applications into application categories. It will sometimes be useful to group attributes into various attribute bundles based on their common applicability to a set of use cases. A given attribute bundle may be associated with a particular application category when the attributes in that bundle are generally required or useful for the operation of applications in that category.
Showing multiple types of attributes including those related to accessibility preferences of the subject
"An example of how a variety of attributes can be provided to a replying party for proper presentation of a web site to an identity having specialized access needs."
credits: Access for all abstract model from ISO/IEC 24751-1