Creating a Prolog program.

To create a Prolog program, you must use an editor to create a file. There are a number of editors available and you can use whatever you prefer. If you have no preference, I suggest using Start|Programs|Unsupported Utilities|Programmer's File Editor. (Again, you will find it convenient to create a shortcut on your desktop.)

Here is how you create a Prolog program.

1. Double-click the Programmer's File Editor icon.

2. Use the File menu of the resulting window to create a new, unnamed file.

3. Enter the text of your file in the file window.

4. You save your file by using the Save option from the File menu on the menu bar at the top of the editor's window, making sure you save it at the root level of your M drive.

5. Make sure that you give your Prolog files the extension .pl .

6. You can copy text in the usual manner by using Copy and Paste from the Edit menu, or by using the key combinations Ctrl-C and Ctrl-V.

7. Warning: Ctrl-C does NOT work to copy text in the SWI-Prolog window; instead, select the text in the usual way and then then click the mouse's right button. To paste, use Ctrl-V as usual.