Sacramental bread adopted the use of unleavened bread due to Liturgical Latinisation. A Host is a portion of bread used for Holy Communion in many Christian churches. In Western Christianity the host is often a thin, round unleavened wafer. In the Roman Rite, unleavened bread is used as in the Jewish Passover or Feast of Unleavened Bread. The Code of Canon Law, Canon 924 requires that the hosts be made from wheat flour and water only and recently made so that there is no danger of spoiling. Hosts are often made by nuns as a means of supporting their religious communities. However,
H.239 H.239 H.239 is an ITU-T recommendation from the H.32x Multimedia Communications' macrofamily of standards for multimedia communications over various networks. The H.239 recommendation is titled ""Role management and additional media channels for H.3xx-series terminals"". Practical importance of this recommendation is its setting forth a way to have multiple video channels (e.g., one for conferencing, another for presentation) within a single session (call). H.239 builds on the ITU-T's H.32x (which includes H.323) and H.245 series of standards, called "recommendations" by the ITU. Tandberg introduced the ability to send a computer or video presentation along with a video teleconference session in 2000