What does this icon at the end of midi part mean?

Cubase
1

Hi
What does this icon at the end of midi part mean? (see picture)
cubase midi part icon.png
I can’t find a description of these icons in the manual.

2

Hi,

This is an Grouped event. Use menu Edit > Ungroup (Ctrl/Cmd + U).

3

That’s it, thank you Martin!