2.1 The Prolog+CG screen
Once the Prolog+CG environment has been started, you will see a screen that looks like this:
There are two main sections of the Prolog+CG window. In the upper section (the program area), you write and edit your programs, while in the lower section (the query area), you write questions to ask the Prolog system. The splitter between the two sections can be dragged to make either section bigger or smaller.
The toolbar provides easy access to the most common commands. This button:
is the compile-button. Use it every time you have modified the program text. (The term 'compile' will be explained on the next page.)
is the query-button. You can use it to start the Prolog engine on the question you have written in the query-area.
is the stop-button. You can use it to stop the Prolog engine as it searches for solutions to your question, if it takes too long.
The Prolog+CG window is divided into main two areas:
The toolbar provides easy access to the most commonly used functions, such as:
The next section explains the development cycle of Prolog.
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