Pipe Specs contain piping content source from the piping catalog and are used within spec-driven P&ID projects and Plant 3D projects and contain piping part information that works in conjunction with spec updates so that piping models and spec-driven P&IDs can have their property information updated. On the 3D model side, if there's geometry changes to content, those updates can be applied through spec updates, so when a spec has additions or modifications, those get transferred to the model with the spec-driven P&ID.