  7
   ,        7;      .

ϳ:
-     <>,                 7.         .
-          7,        7,       .         . 
-          7,        7,    <Ctrl> + <1>  .         . 
-          7,       .
-          7,   <1>  .
-               ,       .          .   
-        '    2D  3D    <>   .              2D/3D  .  
-       <>    .