G.f. method
Closes a file stream.
close file-stream #key abort? wait? => ()
<file-stream>.
<boolean>. Default value: #f.
<boolean>.
None.
io
streams
Closes a file stream. This method frees whatever it can of any underlying system resources held on behalf of the stream.
If abort is false, any pending data is forced out and synchronized with the file's destination. If abort is true, then any errors caused by closing the file are ignored.