how to modify the column name? I only find out the way to modify column cells.

i need to to do three things currently. I read the TABLE part in the manual but maybe I missed the relative description.

1, I want to align the name of the column in the way I want.
2, can I type super/sub-script in the cell of the table?
3, is there a way to modify the table in the unit of a cell but not changing whole column together?

many thanks!

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1, I want to align the name of the column in the way I want.


Each column has an alignment that applies to the column name as well as the cells in the column.

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2, can I type super/sub-script in the cell of the table?


Tables don't display formatted text - plain text only.

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3, is there a way to modify the table in the unit of a cell but not changing whole column together?


No.

It sounds like you are trying to use an Igor table as a formatted table. Igor tables are not suitable for that purpose.

One option is to create the formatted table in another program, such as a word processor.

In some relatively simple cases, it may be possible to write an Igor procedure that creates a formatted notebook with text formatted as you wish. You would have to use tabs to create columns.

If you create a sample notebook formatted as you with, you can use Notebook->Generate Commands to see the Notebook commands required to recreate the notebook. For details:
DisplayHelpTopic "Generate Notebook Commands Dialog"