Represents position of a margin box along the variable dimension of the page.
START and END can be interpreted as 'inline-start' and 'inline-end' in
horizontal and vertical writing modes. For example, for top margin boxes
(@top-left-corner, @top-left, @top-center, @top-right, @top-right-corner),
Top-left
corresponds to START,
Top-center
to CENTER, and
Top-right
to END.
The corner boxes (@top-left-corner and @top-right-corner) have a 'null'
position.
Represents position of a margin box along the variable dimension of the page. START and END can be interpreted as 'inline-start' and 'inline-end' in horizontal and vertical writing modes. For example, for top margin boxes (@top-left-corner, @top-left, @top-center, @top-right, @top-right-corner),
Top-left
corresponds to START,
Top-center
to CENTER, and
Top-right
to END. The corner boxes (@top-left-corner and @top-right-corner) have a 'null' position.