Bar/Measure Numbers - Display/Print
View: Show Bar Number Panel - having this checked (on) will display the bar numbers across the top of the editor.
File: Page Setup, Options tab, Measure Numbers: None, Plain, Circled, Boxed and Measure Start: will control how/if measure numbers are printed. They are printed at the start of each system.
BarCounter.nw - ability to reset the bar count at any point of song
BarLabel.ms - boxed bar label, text entry allowed, will print based on where the object is added