The package Text_IO.Streams allows a Text_IO file to be treated
as a stream. Data written to a Text_IO file in this stream mode is
binary data. If this binary data contains bytes 16#0A# (LF) or
16#0C# (FF), the resulting file may have non-standard
format. Similarly if read operations are used to read from a Text_IO
file treated as a stream, then LF and FF characters may be
skipped and the effect is similar to that described above for
Get_Immediate.