An optical transmitting and receiving module, with which there is no need to provide a submount for disposing a photodiode on a substrate and with which spatial restrictions can be made small, is provided. The invention also relates to redispersion powders obtained by drying said dispersions. The information mart generates content files that are organized in accordance with a predefined hierarchy of subjects, and a predefined set of relational attributes that are applied to all subjects of the subject hierarchy. 7 signaling networks can be minimized by managing a signaling network and handling a signaling message, respectively, during interworking between different No. The device is an assembly of a anchor with a cord passed through it, and a stopper to prevent the cord from passing back through the anchor.