sets the flush mode for the output buffer
INCLUDE 'iolib.h' set_flush_nl(Mode)
integer(Mode) (i) flush mode
If the flush mode is set to 1 (default), the output buffer is flushed automatically after every nl character. Setting mode to 0 suppresses this, causing the buffer to be flushed only when full or when flush_print_buffer is called. Mode 0 increases data throughput because less server communication is required, which is especially useful with file i/o.
prolog-process, client-server, object