set fwrite <-be or -le> <-sq or -st> <-ap or -cl> fname
Sets the filename for data output as well as byte ordering and data format.
fname   output filename (default = grads.fwrite)
    -be     output data byte ordering is big endian
    -le     output data byte ordering is little endian
    -sq     output data format is sequential
    -st     output data format is stream (default)
  -ap     output data is appended to existing file
  -cl     output data replaces existing file
  if it exists (default) 
  
The q fwrite command
returns the status of the fwrite options.