Usability is a large advantage of using DNN. When version 3 was launched, adding pages (tabs) and filling them with modules became a very quick process. In many places when creating a link, there is a common control that easily allows a choice between linking to a page in your site, a file or a URI offsite. The file dialog is a great benefit. It is very common for users to upload a PDF or Word document and create a link; in DNN it is not necessary to leave the link edit page to accomplish this task.
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