PREFIX OPERATOR: &--
SYNOPSIS:
EXAMPLES:
> with(tubular):
>
read_in(3,3,3);
assume f1 , f2 defined
>
show(f1);
>
show(f2);
>
f3 := &-- f1; show(f3);
>
show(f1 &++ (&-- f2));
SEE ALSO: &==, &++, &mm, tubular/datatypes
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