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    Cadabra
    
   Computer algebra system for field theory problems 
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Variables | |
| wnd = GLWindow.create_window() | |
| ctx = ModernGL.create_context() | |
| prog | |
| vbo | |
| vao = ctx.simple_vertex_array(prog, vbo, ['vert']) | |
| viewport | |
| tst.ctx = ModernGL.create_context() | 
| tst.prog | 
| tst.vbo | 
| tst.viewport | 
| tst.wnd = GLWindow.create_window() |