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Just checked the url and I noticed you had it the same way you posted it here, I also think should get rid of those icons or possibly reduce it only the bold sections, it’s too much and distracting just as ABCbits mentioned..
Thank for feedback, unfortunately I cannot post a picture here, let me share picture in good quality over a share.
The intermediate state of the document can be see over the link below, have added also some pictures from the printed book:
https://drive.google.com/drive/folders/1NJhb50NW2xx2_VOhWqb7cV9Uby3dPUsZ?usp=drive_link To mention, printed on paper, it looks much better, but it is build up to be used in both ways, paper and digital form.
And with all links inside, using the PDF is necessary as well.
Once V4 completed, I could try to remove all icons everywhere, this will certainly give another look. I can try later

Or just stay with some (or any idea if I can remove them automatically from the summary table? does a kind of function exists in LibreOffice?)
Thank a lot for help,
Fabrice