1. A hand-supportable planar laser illumination and imaging (PLIIM) based code symbol reader comprising: a hand-supportable housing having a light transmission aperture; a linear image formation and detection module, disposed in said hand-supportable housing, and having a linear image detection array and image formation optics with a field of view (FOV) extending from said linear image detection array, through said light transmission aperture and onto an object moving relative to said hand-supportable housing during object illumination and imaging operations; a planar laser illumination beam (PLIB) producing device, disposed in said hand-supportable housing, and having at least one visible laser diode (VLD) arranged in relation to said linear image formation and detection module, for producing a planar laser illumination beam (PLIB), and projecting said planar laser illumination beam through said light transmission aperture and oriented such that the plane of said planar laser illumination beam is coplanar with the field of view of said linear image formation and detection module so that the object can be simultaneously illuminated by said planar laser illumination beam and imaged within said field of view and onto said linear image detection array for detection as a digital linear image of the imaged object; an image grabber, disposed in said hand-supportable housing, for grabbing digital linear images formed and detected by said image formation and detection module; an image data buffer, disposed in said hand-supportable housing, for buffering said digital linear images grabbed by said image grabber, and constructing a two-dimensional digital image of the object from a series of buffered digital linear images thereof; an image processor, disposed in said hand-supportable housing, and operably associated with said image data buffer, for processing said two-dimensional digital image so as to read one or more code symbols graphically represented in said two-dimensional digital image; and a controller for automatically controlling one or more of said linear image formation and detection module, said PLIB producing device, said image frame grabber, said image data buffer and said image processor.