Can I create a global paragraph/character catalog?

Question

Is there a way to create a global style catalog in FrameMaker so that, when I modify a character or paragraph style in one document I can save those changes back to the catalog so they are available for my other documents?
I know that I can create a new document using another document as a template, and I know that I can select a single document as my base document or "template" and manually add the style changes to its catalog, but this presents two problems:
1- I need to manually make the changes in my template document after I make them in my new document.
2- I need to manually import the update styles into existing documentation.
both of these actions require manual effort and inevitably lead to out of sync catalogs.
Does anybody know of a way to create a global catalog to which I can save style changes?

Answer 1

Thanks for the replies, but there seems to be a lot of manual effort involved in all of the suggestions above which is what I'm trying to avoid.
I know how to import formats as I stated in my original posting. My question is whether there is a way to more easily manage the process with a global catalog of some kind.
I am new in my current position and there are no standard document templates so I am creating them as I go. It being very difficult (nearly impossible) to anticipate every possible formatting choice, I am creating paragraph and character tags as I go. When I see these tags set against each other in new ways, I tweak them. there is currently no good way to send those tweaks back to a global template to make them present in my existing documents. It requires the manual efforts described in my original post and in subsequent replies. This leads very quickly to documents being out of sync with the new standard.
I would love to know if anyone else has ideas on this that do not require a lot of manual effort. I'd prefer to spend that effort on document creation rather than tag management.
Thanks!