https://bugs.php.net/bug.php?id=38768&edit=2
PHP :: Bug #38768 :: addChild to an empty node doesn't add a child
https://learn.microsoft.com/ja-jp/dotnet/api/system.windows.eventtrigger.system-windows-markup-iaddchild-addchild?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
EventTrigger.IAddChild.AddChild(Object) Method (System.Windows) | Microsoft Learn
Adds a child object.
objectmethodsystemwindowsmicrosoft
https://community.adobe.com/questions-540/how-to-leave-addchild-with-z-index-0-above-a-compoment-135293
how to leave addchild with z-index 0 above a compoment? | Community
var Bt = new lib.objetos;this.addChild(Bt);Bt.x = 275, 5Bt.y = 200, 5var child = Btthis.setChildIndex(child, this.numChildren - 1);/////////////////////...
how to
https://learn.microsoft.com/en-us/dotnet/api/system.windows.controls.itemscontrol.addchild?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0&redirectedfrom=MSDN
ItemsControl.AddChild(Object) Method (System.Windows.Controls) | Microsoft Learn
Adds the specified object as the child of the ItemsControl object.
objectmethodsystemwindowscontrols
https://bugs.php.net/bug.php?id=38672&edit=2
PHP :: Bug #38672 :: asXML outputs elements added with addChild() on the same line
https://learn.microsoft.com/en-us/dotnet/api/system.windows.documents.textelement.system-windows-markup-iaddchild-addchild?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
TextElement.IAddChild.AddChild(Object) Method (System.Windows.Documents) | Microsoft Learn
Adds a child object.
objectmethodsystemwindowsdocuments