To Verify Contour Gaps
1. Click > . The Contour Gaps dialog box opens.
2. Enter the Accuracy value.
3. Click a button to select the curves and edges to use when searching for contour gaps:
◦ ![](../PDX/images/pdx_analysis_button_select_chain.gif)
—Select a chain of curves or edges.
◦ ![](../PDX/images/pdx_analysis_button_select_line.gif)
—Select individual curves or edges.
◦ ![](../PDX/images/pdx_analysis_button_clear_chain.gif)
—Discard all selected curves and edges.
◦ ![](../PDX/images/pdx_analysis_button_show_chain.gif)
—Highlight all selected curves and edges.
4. Click
![](../PDX/images/pdx_analysis_verify_contour_gaps.gif)
to search for contour gaps.
5. Click Close.