well, with the search you would have found file-writers, but you are right, not simple writefile() is there.

the reason is very simple.
it's because writefile is simple.

here is an example writefile udf:
function writefile($file,$data)
 dim $filehandle,$RC
 $filehandle=freefilehandle
 $RC=open($filehandle,$file,5)
 $RC=writeline($filehandle,$data)
 $RC=close($filehandle)
endfunction
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