=== MetaClass & Classification ===
[[File:IL_DOM_011.png|thumb|220 px|alt=Classification|Classification]]
MetaClasses can specify featues of other MetaClasses by using a "Classification" technique.
Declaration
„A piston pump is a pump and an element of the fluid technology.“ [gen]
„Piston pump“ is a child MetaClass of „Pump“ and classified as „Fluid technology“ object. [techn.]
==Conclusion==