When a layout is plotted, the area in which is plotted is determined by the PlotType property. The value stored in the PlotType property is one of the values defined by the PlotType enum. The PlotType enum defines the following values:
Prints everything that is in the current model space display. This option is unavailable when plotting from a Paper space layout.
Prints everything that falls within the boundaries of the currently selected space.
Prints everything that is in the limits of the current space.
Prints the view named by the PlotViewName property.
Prints everything in the window specified by the PlotWindowArea property.
Prints everything that falls within the margins of the specified paper size. This option is not available when printing from Model space.
When you create a new Paper space layout, the default option is Layout.