ables</strong> -- These are <strong>A</strong> to <strong>Z</strong>, each storing
one positive integer word (ie 0 to 65535). The <strong>R</strong> and <strong>S</strong> variables have
special roles with <strong>LOAD</strong> and <strong>SAVE</strong> commands, as explained in the instruction
list below.</li>
<li><strong>String variables</strong> -- These are <strong>$1</strong> to <strong>$8</strong>, each 128 bytes
long.</li>
<li><strong>Arrays</strong> -- You can use string variables as arrays via the 