MRC:
The technical differentiating characteristic/s/ of an item of supply which depart/s/ from the text of a specification or a standard in that it represents a selection of characteristics stated in the specification or standard as being optional,or a variation from one or more of the stated characteristics,or an additional characteristic not stated in the specification or standard.ZZZW
Departure From Cited Document:
Dgsc cut sheet to mil-n-634c dated 16 june 80; case shall be constructed of wood, laminated wood orpartical board and shall be covered with a plastic coated fabric