Protodeclarative pointing is
the use of pointing to draw someone else's attention to an
object or item of interest, thus enabling an individual to share their interest
with another. Thus a child might point to a bird so that his mother will look
at it too. Children on the autism spectrum tend not to use this form
of pointing, though they may use protoimperative pointing to
indicate an object or item that they want or desire, such as pointing to a
biscuit to indicate they want to have it.