750 ILCS 36/206

(750 ILCS 36/206)

Sec. 206.

Simultaneous Proceedings.

(a) Except as otherwise provided in Section 204, a court of this State may
not exercise its jurisdiction under this Article if, at the time of the
commencement of
the proceeding, a proceeding concerning the custody of the child has been
commenced in a court of another state having jurisdiction substantially in
conformity with this Act, unless the proceeding has been terminated or is
stayed by
the court of the other state because a court of this State is a more convenient
forum
under Section 207.

(b) Except as otherwise provided in Section 204, a court of this State,
before hearing a child-custody proceeding, shall examine the court documents
and
other information supplied by the parties pursuant to Section 209.  If the
court
determines that a child-custody proceeding has been commenced in a court in
another state having jurisdiction substantially in accordance with this Act,
the court
of this State shall stay its proceeding and communicate with the court of the
other
state.  If the court of the state having jurisdiction substantially in
accordance with
this Act does not determine that the court of this State is a more appropriate
forum,
the court of this State shall dismiss the proceeding.

(c) In a proceeding to modify a child-custody determination, a court of this
State shall determine whether a proceeding to enforce the determination has
been
commenced in another state.  If a proceeding to enforce a child-custody
determination has been commenced in another state, the court may:

(1) stay the proceeding for modification pending the