Stacked
Stacked finds stacked lines and arcs in the current part and calls Split to split them. To use Stacked:
1. Click Parametric, Clean and Duplicate. Elements to be split are highlighted and the points to be used for the splits are marked with a *.
2. Click Confirm to split elements.
* 
To clean up most common problems in a part, run the Clean commands in the following sequence:
Points
Merge disconnected points.
Duplicate
Remove existing duplicates and those caused by merging points.
Stacked
Split overlapping elements.
Duplicate
Remove duplicates caused by splitting.
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