Hello Paul,
Here I am again with 2 other questions regarding my Word file. I hope so much that you can help me and save me some hours of Google research:

1. one of the larger chapters of my work was fully set up in 2 columns where I entered several thousand of items... I found how to insert/remove a vertical separation line between the columns but I did NOT find how to change the thickness of that line...?

2. How can I break the 2 columns setup at a certain point in order to insert imported images covering the whole width of the page...?

Thanks so much again !

Yves

Word doesn't allow you to change the thickness of the column separator

If you insert the image as a wrapped image, it can span multiple columns - as can a textbox or a wrapped table. Otherwise, you'd need to insert continuous Section breaks either side of where the object is to go and format the intervening section for a single column. If you do that, though, your text won't continue across either of the Section breaks.

PS: Please stop posting new questions in the same thread. Start a new thread for a new question.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]