====== FWRITE chnl:integer, exp:multitype, size:integer ======
Write binary data to a file  

`exp` is the expression whose result should be written  
`size` is the size of data to write to var  

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**See also:** [[ppl:statements:fput|FPut]], [[ppl:statements:fputpad|FPutPad]], [[ppl:statements:fputln|FPutLn]]