In the context of a will, a testator may devise a simple life estate to a devisee.
From the en.wikipedia.org
The testator should declare that he or she revokes all previous wills and codicils.
From the en.wikipedia.org
An inheritance can be re-assigned by the testator to a more suitable heir.
From the evangelicaloutpost.com
The testator may retain the reversion in the estate or give it to another individual.
From the en.wikipedia.org
As for real estate, a testator may add a named beneficiary to a deed by executing a life estate deed.
From the en.wikipedia.org
The testator clearly identifying him or herself as the maker of the will, and that a will is being made.
From the edition.cnn.com
If the testator doesn't appoint an executor the court will.
From the edition.cnn.com
A will may also create a testamentary trust that is effective only after the death of the testator.
From the en.wikipedia.org
That is, after revoking the prior will, the testator could have made an alternative plan of disposition.
From the en.wikipedia.org
More examples
A person who makes a will
A testator is a person who has written and executed a last will and testament that is in effect at the time of his/her death. It is any "person who makes a will."Gordon Brown, Administration of Wills, Trusts, and Estates, 3d ed. (2003), p. 556. ISBN 0-7668-5281-4.
One who dies having made a legally valid will
A man who makes or has made a testament or will.
One who writes or has written and signs a will.
A person that has made a will or that has died leaving a valid will.