When editing a page in Visual Editor, you can insert a link to a page or a media file as well as insert an image.
In C1 CMS version 5.0 or later, you can likewise link to individual data items and have them resolved into public URLs on published pages.
For example, a blog post (Composite.Community.Blog), news items (Composite.News) or a product description can now be linked to internally in the editor and accessed publicly on the website.
Define the data link's internal format (e.g. ~/blog() for blog posts).
Have these internal links resolved into public URLs.