File/Project symbol Resources?

[johnny]

Is there a location where you can easily re-use symbols that have been imported into a project/file already?

[yusuf-333]

I don't know any conventional way or place to get those project specific  symbols. But I usually place any symbol in the user library by assigning a unique name/style related to the parent project. I remember once I created a folder containing all the custom windows and doors respectively in the user library and giving it the name of parent file. So I quickly go to library and access those symbols directly in that folder. Some sort of naming that references the parent project/file is good to locate where to find it for future use. Hopefully I am not misunderstanding the gist of the OP.