[Vince]

The ampersand means that the argument is to be passed as a reference, not as a value. If you pass arguments by value (the default) then the original value of the variable will not change. If you pass arguments by reference then they will. For example:

pawn Код:

new a = 42;

stock byRef(&value)
{
    value++;
}

byRef(a);
printf("%d", a);

Will print 43. Whereas:

pawn Код:

new a = 42;

stock byVal(value)
{
    value++;
}

byVal(a);
printf("%d", a);

Will still print 42.