Names graphical or other image-related elements in the base DTD Suite that cannot be used inline, but only as block elements; the display elements may occur within the text of a paragraph although they are typically at the same hierarchical level as a paragraph.
<!ENTITY % block-display.class
"boxed-text | chem-struct-wrapper | fig |
graphic | media | preformat |
supplementary-material | table-wrap" >articleauthcustom-classes.ent