Changes

* The Octave operator {{codeline|<code>!}} </code> should be used for logical negation, rather than{{codeline|<code>~}}</code>. * The negation operator is written with a space between the operatorand its target, e.g., {{codeline|<code>! A}}</code>. Use {{codeline|* For comparisons use <code>!=}} </code> instead of {{codeline|<code>~=}}</code>.