The only way to create windows is writing the basic equations in a python script.  There are no basic cutting, pasting, copying functions in the sketcher.

The script creates a window creation tool.  Then the tool cuts out windows you can see through.  OpenCAD has a few rounding errors, causing some windows not to open.  Offsetting by 1mm in random places seems to work.  There's the issue of a tinted, reflective texture.  The whole model may end up being from equations.  Tweeking is a buster because it takes a long time to recompute the model.

The lion kingdom wanted see through windows instead of textures.  In the blackness of space, with interior lighting, it should look sick.  The pillars may have to be rounded polygons of their own.  Note the model is based on the latest 9 meter diameter reported by the spynet.