>>>You need to run through all columns
>>
>>Help SetAll
>>to ease the running effort
>
>I'm not that into SetAll. SetAll was not recursing into inner containers for what I remember. For grid.column_n.text.fontsize the container is the column.

That's not how I remember it... but now that I tried it, it really doesn't recurse. And exactly the reason why I used the recurser (see https://www.levelextreme.com/Home/ShowHeader?Activator=17&ID=21923) to set the fonts on my form. So my code is fine, my memory isn't :)