Glossary related elements

In this section:

1. abbreviated-form
   The <abbreviated-form> element represents a reference to a term that may appear in an abbreviated form (often an acronym). The long and short forms of the term are generally defined in a <glossentry> topic. Processors should display the referenced term when rendering an <abbreviated-form> element.
2. glossref
   The <glossref> element is a convenience element in maps for creating a reference to a glossary topic. It has a required keys attribute, which forces the author to create a key by which inline terms may reference their definition. For example, when glossentry topics are used to define acronyms, this will remind authors to create a key which <abbreviated-form> elements may use to reference the short and expanded versions of that acronym.
3. glossgroup
   The <glossgroup> is a specialized topic element that may be used to contain multiple <glossentry> topics within a single collection.