meaning of "Not displayed - drag elements here"?

[klint]

Hi fellow translators
French translation has awaken from MB 2.5 and will land soon
But I have one question.
In the MB panels configuration main dialog, what does "Not displayed - drag elements here" mean, while "here" is the only place where nothing can be dragged actually
Thanks

[klint]

I have found a solution by translating a slightly different sentence: "Not displayed - but drag elements on any displayed panel"
Or even by removing "- drag elements here".

[Steven]

the message means that the panel is currently not displayed but you can drag an element into that area so the panel will be displayed with that element.
Not all elements can be included in all panels. When you start dragging an element from the right "available elements" area, the allowed panels will have a red line displayed

edit:
your second post is wrong - thats not what the text means

[klint]

Ok, now I get it. Quite nice feature, but was not obvious to me at first sight.
I'll keep the original sentence then, or maybe change it slightly to "Not displayed - drag supported elements here to display the panel". What do you think?
Thanks
And sorry for forgetting to post on the Q&A section... I've been away from here for too long