It would be useful if Excel had tha option to insert "SUB" worksheets linked
to "MAIN" worksheets. For instance if I have (3) worksheets that are
summarized in another (main) worksheet, and this situation occurs more than
once in a file, it can be rather difficult to remember which (sub) sheets are
tied to which (main) worksheets. If "SUB" worksheets could be inserted and
shown at the bottom of the work area in a sub-level type fashion, it would
make this situation much more user friendly..

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