I don't think the info is clear - here's an example :
'Set the category's display order. 1 represents the top of the list.'
it might be better described as below (specifically mentioning that negative numbers can be used ) :
'Set the category's display order. Lower numbers appear closer to the top ( eg -5 will appear above 5 )
the info may appear more often but i searched for 'top of' and dragged up 17 results