Yeah - it's a bit opaque: > Note free_tool_id() will not disable global or local events associated with tool_id, nor will it unregister any callback functions.

Yeah - it's a bit opaque: > Note free_tool_id() will not disable global or local events associated with tool_id, nor will it unregister any callback functions. This function is only intended to be used to notify the VM that the particular tool_id is no longer in use. Why won't it do those things? Why would I want to notify the VM of this without unregistering?