Red symbol S and N

[Remyannio]

What is the use of the red symbols S and N ?

[pdxdjazz]

By using S and N in the editor (small/normal) chords can be made more readable in crowded measures. Remember, each N or S applies to all subsequent chords in the chart. When you use S to make a couple of adjacent chords fit better, please use N on the next chord to reset the rest of the chart.

Because many users have small-screen devices, it's always best to use the small chord-font only when neccessary for readability.

https://technimo.helpshift.com/hc/en...rd-font/?p=all

More:
https://www.irealb.com/forums/showth...ushed-4th-beat

These posts are informative:

Glossary
http://www.irealb.com/forums/showthr...&p=282#post282

Conventions
http://www.irealb.com/forums/showthr...&p=301#post301

)BOB