Truncate Silence Still has old interface

I’m trying to use truncate silence in version 2.0.5 but am still getting the old interface, not the newer one that has the “Ignore silence less than” and “then truncate to” functionality as shown at

Is anyone else seeing this and do you know if there Is there a separate plug-in that has to be loaded for this newer functionality?

Thanks for your help

You’re looking at the manual for the new, not yet released Audacity 2.0.6 alpha.
When 2.0.6 alpha is ready for release it will be released as Audacity 2.0.6.

The correct manual for Audacity 2.0.5 (the current release version) is here:

and the page for Truncate Silence is here:

If you install Audacity from the recommended installer ( the correct manual is included in the Help menu.