This dialog allows you to create up to three sort levels for a custom sort "ad-hoc" sort. Each level may be ascending or descending and the overall sort may optionally invoke case sensitivity.
Sort View by (Then by)
These options allow selection of a field for up to three sort levels.
Ascending or Descending
Where Ascending is "Top to Bottom" and Descending is "Bottom to Top". When viewing alphabetic data, Ascending will start with A and end with Z where Descending would start with Z and end with A. When viewing numeric data, Ascending will start with 1 and progressively move higher while Descending would start with the highest value and progressively move toward 1.
Ignore Distinction Between Upper and Lower Case
This option should normally be enabled and will sort both upper and lower case letters the same.