Delete duplicate entities dialog box
The Delete Duplicate Entities dialog box allows you to delete duplicate entities and overlapping lines, arcs, and polylines, and unifies partly overlapping or contiguous ones.

- Entity properties to ignore
- Comparison tolerance
- Options
- Duplicates
Entity properties to ignore
Selected properties are ignored when comparing duplicate or overlapping entities.
Comparison tolerance
Sets the tolerance for the comparison process. If set to 0 (zero), entities must match completely before being evaluated in the overkill process.
Options
Determines how special cases are handled.
- Maintain associative entities
- Associative entities are not processed.
- Optimize segments within polylines
-
Evaluates segments of selected polylines individually, duplicate vertices and segments are removed.
- Ignore polyline segment widths: ignores the Width property of overlapping polyline segments.
- Don’t break polylines: polylines entities are kept intact.
- Join collinear entities that partially overlap
- Unifies partially overlapping entities into a single entity.
- Join collinear entities when aligned end to end
- Unifies collinear lines and polylines having coinciding endpoints into a single entity or segment.
Duplicates
Determines what to do with duplicates: either delete them or move them to a Duplicate Entities layer.