Is your computer "powered up" (turned on) and ready to go? If not. flip back to page 8 in the In- troduction Section and follow the steps to display this screen: The black square is the CURSOR. II marks the next posi· tion on the screen where a letter. number. symbol or space will ap- pear when you press a key on the keyboard. The cursor helps you keep track of ·'where you are" on the screen. MODES You can use your Aquarius·· Computer in two different ways. or MODES. In one mode, Aquarius'" responds immediately to each instruction you type, as soon as you press the RTN key. For this reason. il is called the IMMEDIATE Mode. (Some people call it the Direct Mode.) In the second mode.
Aquarius is a little more patient. It lets you enter entire lists of instructions and does not execute them until you tell it to do so. These lists of instructions are what we call "programs". so this mode is called the PROGRAMMED Mode. (Of course!) Pay particular attention to the objects labeled PROMPT and CURSOR. You will be seeing them quite often. KEY IDEAS The word Ok is the PROMPT. This ap- pears whenever the Aquarius is ready to receive your instruc- tions. tween Immediate and Pro- grammed Modes. For example. instructions are called COMMANDS in Immediate Mode and are NOT numbered. Instruc- There are other differences be- tions are called STATEMENTS in Programmed Mode and ARE