[Lazarus] IDE docked 2 windows together

[Frans]

Hi.

I use Lazarus 1.6 and FPC 3.0.0 on windows. I've docked several windows in the IDE, the Object 
Inspector, the Code editor etc. Two windows were docked on top of each other and tabs were added to 
choose the visible window. This was the Messages window and the Watch List.
Unfortunately I lost my complete docking (my fault) and so I did it again. But now, the two windows 
stay seperated.
I don't mind, but I wonder what I did the first time and didn't do now. I've searched the net, but I 
cannot find an answer.
Anyone an idea?

-- 
mvg
Frans van Leeuwen
M 06-51695390