Addendum to that: the "+" operator is now connected to a "ArrayOperators" modeswitch.
Thank you. Guess that is an acceptable solution.
{$modeswitch ArrayOperators-} // Note the "-"
Why is it "-" in this case rather than "OFF" ?
As far as I understand, + is an alias to on, - an alias to off, (or vice versa) they are interchangeable, he only drawn your attention to the - because it is easy to miss, if he had used off instead then the note would not have been necessary.