%block-display.class;
Block Display Class Elements
Names graphic or other image-related elements in the base Suite that cannot be used inline, but only as block elements. These block-level display elements are typically used at the same hierarchical level as a paragraph, although they may occur within the text of a table cell or paragraph.
Model
<!ENTITY % block-display.class "address | alternatives | array | boxed-text | chem-struct-wrap | code | fig | fig-group | graphic | media | preformat | supplementary-material | table-wrap | table-wrap-group" >