Cubit 15.8 User Documentation
CUBIT has two different internal representations of hexes: FullHexes and NodeHexes. The NodeHex is a lighter weight data structure, but occasionally nodeset and sideset shortcomings can be overcome by using FullHexes. The user can select which type of hexes get created when generating or importing a volume mesh with the following command:
Set FullHex [Use] [on|OFF]
Using the FullHex representation increases the memory used to store a mesh by a factor of approximately five.