question about columns

"… but I wonder if it is possible that between the two sub-columns, I could have something like a double line margin (like at the right : see red arrow) ?"

That "double line margin" is a non-printing guide.

I do not think that you can get such a guide with split paragraph texts.

If you need a visual hint instead that is non-printing you could use paragraph shading that is set to non-printing:

Regards,
Uwe Laubender

( ACP )

@Laubender 

I have used this split column window you advise me to use :

The result is good here, but I wonder if it is possible that between the two sub-columns, I could have something like a double line margin (like at the right :  see red arrow) ?

Was thinking about this some more while out walking and given the structure there you might actually do better inserting a table.

In any case I think you'll need to do some re-formatting.

Hi Pierre,

to illustrate what Peter said, a screenshot from my German InDesign 2022 where I use the Split to Columns function of the Paragraph panel with three selected paragraphs:

Regards,
Uwe Laubender

( ACP )

You can try the Split Columns feature for that paragraph or paragraphs.