Orinj version 6.0.0
The time signature line is the thin horizontal panel at the top of Orinj that shows you the current measures and beats. The displayed numbers are in the format mm:bb (measure, beat). How much is shown depends on the current zoom. The further in you zoom the more detail on the time signature you will get.
All Orinj views, except for the loop building view, contain a time signature line.