FSET
This command  is used to  define a  set  of element faces. Defining face sets can be useful for either defining boundary conditions, material interfaces, or surface subsets for further mesh processing.
FORMAT:
fset / name / pset, get, pointsetname /

The fset name must be an integer or character string. Currently, only 32 named face sets may exist. However, any number of integer-numbered face sets (up to the total number of faces in the problem) may be defined. Face sets may be used in all of the usual ways that eltsets and psets may be used, e.g :

cmo/setatt/ 3dmesh/fluid_structure/fset,get,blue/


where fluid_structure is the name of a face set attribute.
   

NOTE: All modules do not support use of fset.
EXAMPLE:
 fset / fname / pset, get psetname