For writing character oriented Prolog applications there is the console window. The console window pops up if input is read from the standard input stream or data is written to the standard output stream.
The button End of stream can be pressed if the user does not want to enter anymore data. The two fields at the bottom of the window state if the standard input (output) stream is the current input (output) stream.
| |
 |
The console window cannot be closed when characters must be entered by the user. |
see also: show_console/0 stream input and output