Cleaning out the library

Is there a command to delete all unused drawings from the library? I’ve accumulated hundreds of these, and picking them out one by one would take forever. Eliminating them would shave off considerable load/save time from my current project. Thanks for any input.

There is no automatic way to do this yet.

However, a good way to clean out your project is to create templates from each one of your scenes by selecting everything on the right side of the Timeline and then dragging it to the library.

This way, only used drawings will be stored in the templates. You can then import each template into a new project.