[Description] The reading order of the content is clearly defined in the markup (e.g., figures, sidebars and other secondary content has been marked up to allow it to be skipped automatically and/or manually escaped from. [Expected Values] 
readingOrder
a n n o t a t i o n s
b o o k m a r k s
i n d e x
p r i n t P a g e N u m b e r s
r e a d i n g O r d e r
s t r u c t u r a l N a v i g a t i o n
t a g g e d P D F