The Typika (gr. τυπικα ; sl. Обедница or Изобразительны) is a brief service that is appointed by the Typikon for certain occasions but may also be conducted when a priest or bishop is not present. There are various modifications that are made to this service to incorporate elements from the Divine Liturgy, some of which are designed to be led by laymen; and in some jurisdictions, it can also be a service led by a deacon which includes the distribution of Holy Communion. When held in a church, the doors of the iconostasis remain closed and the service is conducted in the nave.