Selecting another browser via flammarion directly

[rubyFeedback]

On my system firefox is used, oddly enough; I am using thorium most of
the time though (a chrome based browser). Could you show a code
example how to switch to thorium rather than firefox? I'd also like
to test this via opening a new tab directly. Hopefully you can understand
my issue request - I'd like to tie one tab from my KDE konsole commandline,
to one particular tab (e. g. for flammarion) if that is possible.