msgexplan — Explanatory material relating to a message in a message set
msgexplan ::=
((((title
? &
titleabbrev
?),
info
? db.titleforbidden.info) |
info
db.titleonly.info),
(annotation
| bridgehead
|
remark
| revhistory
| Indexing inlines | Admonition elements | Formal elements | Graphic elements | Informal elements | List elements | Paragraph elements | Publishing elements | Synopsis elements | Technical elements | Verbatim elements)+)