How can the style setting of the table unit be set to the default (not modified state)?

[dublove]

I can find the imperfections of INDEISGN every day.

For example, on the left line, I set up 2mm at first. Later, I wanted to restore the initial default (not modified), but I found that I couldn't go back.
Can I only build a new style?

[Eugene Tyson]

You can just delete the text and leave it blank

Works for me

[Barb Binder]

Options:

1. Edit > Undo if you just changed the value.
2. Type in the desired value
3. Alt/Opt click on [None] at the top of Cell Styles panel to remove the manual override.

~Barb

[Eugene Tyson]

You don't have to - you can just delete the value and leave the field blank - as I've already shown.