UI library is easy way to load css and javascript files in page.

Each ui library have package descriptor file arikaim-package.json

{ 
    "version": "{ Version }",
    "name": "{ Library name }",
    "title": "{ Library display name }",
    "package-type": "library",
    "repository": "{ Git Repository Url }",
    "help": "{ Help page url }",
    "description": "{ Description text }",
    "files": [
        { css or js files }
    ]          
}