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.