Enable themes can be applied on each and every sections on the basis of URL's, roles and node. One can create their own section and can apply particular enabled theme.
JS path enhances any theme by allowing the front-end developer the opportunity to automatically include and cache javascript into pages and forms by js file naming conventions.
Example #1: If you desire to use jQuery (included in your theme) to add input tag events to a content type edit form with the <form id="post-node-form"> then you save your js file as "js/forms/post_node_form.js" within your current theme's folder.
Example #2: If you have multiple interactive articles posted under the relative URL "/articles/interactive" and you want to append a common JavaScript file to only the pages under that path, then you would save your js file as "js/paths/articles-interactive.js".
For example 2 it searches recursively from more to less specific and stops to inject the script once it finds a match (i.e. if your js file was named "js/paths/articles-interactive.js" then it would apply that first and never find "js/paths/articles.js"). This could change if other contributors have better suggestions. In the mean time, if you wanted to include articles.js INTO articles-interactive.js then you could use jQuery to load that script synchronously as a requirement of the articles-interactive.js file. An example of that would be: