f := open("std57.icn") ----> file(std57.icn)
record array(a,b,c,d,e,f,g)

procedure dummy(u,v,x,y,z)
   suspend u | v
   return x
end

procedure main()
   write("f := open(\"std57.icn\") ----> ",image(f := open("std57.icn")) | "none")
   write("while write(read(f)) ----> ",image(while write(read(f))) | "none")
   write("close(f) ----> ",image(close(f)) | "none")
   write("read(\"f\") ----> ",image(read("f")) | "none")
end
while write(read(f)) ----> none
close(f) ----> file(std57.icn)
Run-time error 105 at line 12 in std57.icn
file expected
offending value: "f"