Hi,
To answer Acknak first, I'll give two examples when I used this:
1) I find a glossary in a web page, with dd tags for definitions. When copy and pasting, I get the list terms above definitions, without separators.
2) I import my telephone contacts (vcf) or calendar (ics), and I want to get rid of some columns for another use. Ms-word does the job of getting every item in its column easily.
You are right, it's not an everyday use, but when you have 300 lines to sort, it is really useful.
Now, thank you so much Villeroy for the solution in calc. I took some time looking for the solution with "indirect" functions, without succeeding. Your formula is quite nice worth being to a special very useful formulas memo
Thank again for your answers
François