@hajovonta Thanks for the respose!
Yep, I did that. But even after executing ~(frame-parameters)~ I don't really get to know which are the available frame parameters. Or even why 'alpha is an alist of two values (95 . 95)
It would be nice to have in the set-frame-parameter function documentation something like a list of parameters, or at least some common parameters like `alpha` and the expected values for them