This built-in predicate writes a newline character to the current output stream, the stream is altered. The current output stream must be a text stream that was opened for writing.
see also: get_byte/1 get_byte/2 get_char/1 get_char/2 get_code/1 get_code/2 peek_char/1 peek_char/2 peek_code/1 peek_code/2 prolog I/O put_char/1 put_char/2 put_code/1 put_code/2 nl/1
| Example | |
| nl. | a newline character was written to the current output stream |
| Exceptions | |
| current output stream is a binary stream | a permission_error(output, binary_stream, OutputStream) is thrown, the variable OutputStream is assigned the stream which was used as the output stream |