Yes, with the release of Lucid version 4.1, support for dichotomous (pathway) key construction is now supported.
Lucid v4 Builder also has a sophisticated text based dichotomous key importer that can check for errors prior to import. Multimedia can be easily added to your keys and then deployed with the no-install instant “play” Lucid Player. For more information on the Lucid Builder see: https://www.lucidcentral.org/lucid-builder/
To review specific dichotomous key features see the Lucid help.
To try out Lucid dichotomous and matrix keys visit: https://keys.lucidcentral.org/search/