What is that symbol next to the outport of a simulink block?

Hi, what is that symbol next to the outport?

[Walter Roberson]

Magnifying glass maybe??

Answer 1

[Subhadra Mahanti]

The magnifying glass on a signal stands for a test point. You can add a test point to a signal through right-clicking on a signal and opening its Properties dialog and going to the Logging & Accessibility tab.

You can learn more about using test points here.