[Solved] How to add the second line in subscript

1642934709(1)

How to add the second line in the subscript, say, for the summation symbol, as shown in the above figure.

You can enter \stack. It’s probably on the menus somewhere as well, but I’m not at the computer right now :slightly_smiling_face:

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Thank you again, it works! :smiling_face_with_three_hearts:

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