Faster use of sets using Include and Exclude
A common way of adding and removing items from a set is to simply use + and – like this:
SetItem:=SetItem+[fsValue1];
However there is a much faster way of doing this that uses much more efficient code. Using Include and Exclude procedures, the same statement above would be written as:
Include(SetItem, fsValue1);
 This does not work for properties of objects. Whilst some checking of this is carried out, hints may still be made which are invalid. Always make a backup before applying this suggestion as it may cause compiler errors.
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