A family can be created using a family template that corresponds to the type of element that the family will create.
The template contains the information required to place the family in projects.
Most of the family templates are named according to the type of element family created from them: wall-based, ceiling-based, floor-based, roof-based, line-based, face-based.
COLLADA is short for Collaborative Design Activity. DAE files are based on the XML COLLADA format, and they are used by various graphics programs to exchange digital assets under the same format. Each file consists of a set of elements that are images, lights, geometries, effects, materials, cameras, etc.