Autodesk AUTOCAD 2006, Command Reference Manual, Page: 499 / 1490

Delete Current Filter List
Deletes a filter and all its properties from the default filter file.
Object Types and Logical Operators
Lists object types that you can filter and logical operators (AND, OR, XOR,
and NOT) for grouping the filter expressions.
If you use logical operators, make sure that you pair and balance them
correctly in the filter list. The number of operands you can enclose depends
on the operation.
Logical operators
Ending operator Encloses Starting operator
End AND One or more operands Begin AND
End OR One or more operands Begin OR
End XOR Two operands Begin XOR
End NOT One operand Begin NOT
For example, the following filter selects all circles except the ones with a
radius greater than or equal to 1.0:
Object =Circle
**Begin NOT
Circle Radius >= 1.00
**End NOT
Save As
Saves a filter and its list of properties. The filter is saved in the filter.nfl file.
Names can contain up to 18 characters.
Select
Displays a dialog box listing all items of the specified type in the drawing.
Select the items to filter. For example, if you select the object type Color,
Select displays a list of colors to choose for the filter.
Substitute
Replaces the filter property selected in the filter property list with the one
displayed in Select Filter.
Object Selection Filters Dialog Box | 475