Now that we can look at memory locations, we also want to be able to change what is inside them. Your wish is the professor's command. Later in the map you will learn that a value of one in location 752 will cause the cursor to disappear (the cursor is the little white box on the screen). This can come in handy when you have a whole bunch of text on the screen and you don't want the cursor up there with it. Since location 752 doesn't normally contain a value of one, we must change it. The POKE command in BASIC will do this for us:


Wow! That was easy. Now you know that POKEing and PEEKing are what this book is all about. For the most part the book will just tell you different numbers to POKE or PEEK.

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