Thanks for your response Carl, it seems a good suggestion.
I think that I would need an external url to refer me to the license and internationalize external urls, too. I've seen that exits a cateories_links table but I think that it isn't the purpose. It's posible that another categories needs an external url could be a good idea extend the categories datamodel in this sense.
There are some attributes to a license that I don't think that will be a good idea use categories:
Perhaps could be a good idea start using categories, although after or before we will need use fields that won't be adequated in categories. For it I thought create a new packages from the begining.
Nevertheless I think that I am not good with the openacs design, so I thanks more suggestions 😊