Thank you so much @AleksandraSamulenkova for featuring #SilverCoil in your #TypeDirectorsClub story on moving type.
Movement Matters: Variable Fonts’ New Tonal Expressions
Tiny fact check: “While a built-in slider to move between masters might seem like a basic requirement for contemporary font editors, it only appears to be available in Fontra.”
@fontlab has native slider(s) since version 6.
In version 5, one could even find one in the Metrics Window, that was the #MultipleMaster technique though, and not #VariableFonts.
https://tdc.org/news/movement-matters-variable-fonts-new-tonal-expressions/