Set analysis Dimension= vs Dimension={}

[Anonymous]

I need help in understanding how Dimension={} works. I understand the Dimesnion = works (removing the selection).

From definition, I came to know that Dimension={} means no selection. Can someone explain what is the difference. I tried but not getting. If possible, please explain with an example.

Thanks in advance for your help

[Anonymous]

Thank you so much for taking effort on this question and made me to get some idea on this. I appreciate it