Vibrato control

Hi, gang!!!

I just wonder if there is some specific (and internationally recognized) symbol (sign) to indicate where, and how much, "VIBRATO" the player has to use, in the piece.

Also... I don't see any kind of control of that "sound effect" (vibrato) inside the MuseScore "synthesizer" (which is not a real synthesizer, but it isn't the point here). Even more... I'm not sure if that control should be inside the synthesizer or it should be something to use in the score itself (like the "muted" sound control).

Is there some plan to add that control, soon? ???

I'm asking this point here, and not in the "General" forum, because it is something directly related with the soundfont files (some of them have too much vibrato, and others don't have any amount of that). So...

Blessings and greetings from Chile!!!

JUAN