ANSI/NISO Z39.96-2015

8 Journal Archiving and Interchange Tag Set, version 1.1 • 8.5 Attributes

8.5.78 @orientation Orientation

Indicates whether an object (for example, a figure or table) should be positioned in a tall manner with the long edge vertical (portrait) or in a wide manner with the long edge horizontal (landscape).

In elements <array>, <boxed-text>, <chem-struct-wrap>, <code>, <fig>, <fig-group>, <graphic>, <media>, <preformat>, <supplementary-material>, <table-wrap>, and <table-wrap-group>, this attribute will be assigned the value portrait by default.
Value Meaning
landscape The object should be rotated by 90 degrees, so that the display is wide rather than tall.
portrait The object should not be rotated by 90 degrees; the display will be taller than it is wide.