Page History
...
This feature is useful for situations where the information displayed does not sort naturally. For example, a column may contain a rating of Good, Average, and Poor. Ideally when sorted the data would remain in that order, but A comes before G, so the Average items would appear at the top.
To solve the problem a second hidden column could be added containing the values 1, 2, and 3 respectively and this could be used for sorting.
...