(1) A citation to
propound a will shall be directed to the executors named in the will and to
all persons interested under the will, and may be issued at the instance of
any citor having an interest contrary to that of the executors or such other
persons.
(2) Where the time
limited for filing a notification of intention to be heard has expired and no
person cited has filed a notification, or where no person who has filed a
notification proceeds with reasonable diligence to propound the will,
the citor may apply on motion for a grant as if the will were invalid.