saveexpvarbkup

   SAVEEXPVAR (MYDIRSTRUCT, VARIABLE, NAME [, PRES])

   Saves an experiment variable VARIABLE to DIRSTRUCT MYDIRSTRUCT with
   the name NAME.  If PRES is 1, then if CELLVAR is of type MEASUREDDATA, then
   any associates of MEASUREDDATA are preserved.

   VARIABLE and NAME can also be cell lists of variables and variable names.