Music Notation

[Rizzo]

What is the interpretation of the”M” in the measures below? Sometimes there is a lower-case “m”. Than you.

 

[Rayblewit]

Is that on the bass clef?

 

[Rizzo]

I'm sorry. It is on the bass clef.

 

[Rayblewit]

I don't know the answer, sorry.
I was just clarifying the position of the 'm'
Someone may know.

 

[happyrat1]

Maybe it stands for modulation.