It is possible to clear all of the item accumulated in the pattern on which you are working.
To clear accumulated patterns:
In the local menu or Inspector bar choose "Clear." All of the accumulated items will be to removed.
Note: The tool has limitation on the number of created patterns (1000). You can change this value using corresponding field in the Inspector bar.
You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure
You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus
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