When working on a job, it is common to define several tools and test them in order to get the desired result for the selected operation. After finishing all the operations for machining a part, you may find many tools in the Tool Library for the current document that are not assigned to any operation (unused tools).
Inventor HSM lets you easily remove all the unused tools by right-clicking the library or tool list and choosing Remove Unused Tools from the pop-up context menu.
Example part before removing unused tools
Remove unused tools prompt
Example part after removing unused tools