1 or many metaclasses

[Modesto Vega]

I have noticed that when creating a profile I can drop a metaclass and connect to it as many stereotypes as I need or add a metaclass per stereotype. For example, I can add a Class metaclass to the profile and connect to it 2 stereotypes, plane and helicopter or I can add 2 Class metaclasses and connect the plane stereotype to one and the helicopter stereotype to the other. Does it actually make a difference?

[qwerty]

There is no difference (in most cases; see Geert's following answer). In fact I use a package for the metaclasses already in use to re-use them.

q.

[Geert Bellekens]

Yes, a number of properties of your stereotype are stored on the metaclass element
(e.g. meaningForwards and meaningBackwards for connectors)

In order to avoid running into issues I recommend using one metaclass per stereotype (the profile helper does it this way as well)

Geert

[Modesto Vega]

Thanks qwerty and Geert