Thanks for your answers.
The idea with wrapping the text I don't like it because of the row height.
Either I have a fixed row height three times higher than normal to show all contents or
I have auto row height then I have a bumpy view depending if description column is wrapped.
This example shows what I like to have:
| Pos || Quantity || Unitprice || Unit || Discount || PO Number|| Total |
| 1|| 3|| 5.00|| Pc|| 50%|| 4512345678 || 7.50|
| 2|| 2|| 2.00|| Pc|| 10%|| 4587654321 || 3.60|
|Lollypop sweet sour and cherry curry hot style taste|
I will try to realize it by duplicate each row, make DataGridCells alternating visible or not
and group rows by Pos column.
Any criticism and suggestion are welcome