  0
   ,        0;      .

:
-     <>,                  0.         .
-          0,        0,       .         . 
-          0,        0,    <Ctrl> + <0>  .         . 
-          0,       .
-          0,   <0>  .
-               ,       .          .    
-            2D  3D    <>   .               2D/3D  .   
-       <>    .