GtkPackTypeGtkPackTypeFlags
 Value | Symbolic name | Description |  |   0 | GTK_PACK_START | 
   Specifies that the packing should be done from top or left of the
   container widget.
   |  |   1 | GTK_PACK_END | 
   Specifies that the packing should be done from the bottom or right of the
   container widget.
   |   
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