Thank you for your answer!
<window name="ingameDebugMenu"
isen't that just the Debug Tools (typing dm in the console)?
ConfigsDump\XUi\windows.xml
line 4016
<window name="ingameDebugMenu" anchor="RightTop" pos="-320,-80" width="300" height="920" controller="InGameDebugMenu" cursor_area="true">
anchor="RightTop" that is one of the debug tools. A bit lower down you find
<simplebutton name="btnSuicide" depth="3" pos="5, -8" width="290" height="32" caption_key="xuiDebugMenuSuicide" />
i've searched for "close" as well. Cuz the there is a button in the Console Window with that name. My thought was that it would make the search easier. There is only 27 entities that contains that word. But 26 of them are just close_group_on_tab="true"
the 27th is
<label depth="2" name="windowName" pos="0,-1" justify="center" text="CLOSE" text_key="xuiClose" font_size="36" />
and that make sence. That must be it! Then i see <window name="windowSignEdit" 😒