ambulatory
-means they are capable of being altered or revoked in whole or in part any time until T’s death
3 ways to revoke a will
1) subsequent instrument
2) physical act
3) operation of law
subsequent instrument
- later writing expressly revokes a prior will
inconsistency
-later writing inconsistent with prior wills so long as it is validly executed later document controls
codicil v new will
physical act
lost wills
operation of law
revoking codicils
revival
-in texas, no automatic revival of a revoked will
Dependent Relative Revocation