The first way:< /span>
tools->display preferences->object view ->reference, select the checkbox before the constraint name.
I tried it myself, it seems that it doesn’t It’s not easy, I don’t know why
The second way:
< span style="font-size:14px">Select the connecting line, as shown in the figure: first select A, and then select Constraint Name in content< /p>
The second way is good for pro-testing