Selection.select

void select (any region, SelectionType type, Number feather, bool antiAlias)

Parameters

region	Array of x and y coordinates that describe the corners of the selection, in the format [[x1, y1], [x2,y2],[x3, y3], [x4,y4]]
type	The method for combining the new selection with the existing selection.
feather	The feather amount.
antiAlias	If true, anti-aliasing is used.

Description

Selects the specified region.