How to close a subsession and resume the main session?

[Swamp Thing]

TL;DR Summary

Ending a subsession in Mathematica

While running a long calculation in a cell, you can do Evaluation > Interrupt Evaluation. A dialog box appears, offering the option of starting a subsession.

But it's not clear how to close the subsession and resume the original calculation. I couldn't find anything on the net.

 

[pasmith]

From https://reference.wolfram.com/language/ref/Dialog.html:

• You can exit a dialog using Return[].
• If you exit with Return[expr], then expr is the value returned by the Dialog function. Otherwise, the value returned is the expression on the last output line in the dialog.

 

[Swamp Thing]

Nice !
I would never have made the connection. It doesn't seem obvious what a front end menu UI dialog box has to do with the Dialog[ ] thing.