This section applies for the purposes of this Chapter.

A disposition includes the conferring of a power of appointment and any other disposition of an interest in or right over property; and in this subsection a power of appointment includes any discretionary power to transfer a beneficial interest in property without the furnishing of valuable consideration.

This Chapter applies to an oral disposition as if contained in an instrument made when the disposition was made.

The date of death of a testator is the date at which a will or codicil is to be regarded as made.

The provisions of the law of intestate succession applicable to the estate of a deceased person are to be treated as if contained in an instrument executed by him (while of full capacity) immediately before his death.