What does anotherwindow.qml mean in qml?

AnotherWindow.qml - type secondary windows project. Explanation of code begin with a secondary application window, since the transmission of information on the button is pressed to open the main application window is realized by a signal.
In addition, how can I create a new window from within QML?
There is no way to create top-level windows using only built-in QML functionality. However there's a project on Qt Labs called Desktop Components, which among other things contains a Window component, which allows you to create new top-level windows.
Besides, how is QML used in the Qt framework? It is associated with Qt Quick, the UI creation kit originally developed by Nokia within the Qt framework. Qt Quick is used for mobile applications where touch input, fluid animations and user experience are crucial. QML is also used with Qt3D to describe a 3D scene and a "frame graph" rendering methodology.
Moreover, which is a modal window in Qt 5.1?
This QML property was introduced in Qt 5.1. The modality of the window. A modal window prevents other windows from receiving input events. Possible values are Qt.NonModal (the default), Qt.WindowModal, and Qt.ApplicationModal.
One may also ask, what are the two parts of a QML document?
A QML document defines a hierarchy of objects with a highly-readable, structured layout. Every QML document consists of two parts: an imports section and an object declaration section. The types and functionality most common to user interfaces are provided in the QtQuick import. To use the Qt Quick module, a QML document needs to import it.