I'll give you an example what i want it for: i have a schedule with sth and it's divided into years and years divided into months. I would like to have a shortcut in the root for the currect month which i can remove every month and replace with new month. Of course i could copy that note from different location but it's not good solution because i can make some changes and i would have to do the same in both locations.
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Obviously there is small difference between symbolic link (mainly known from linux) and and shortcut (Windows).
Symbolic link would show a note from different location but it wouldn't redirect it in the tree, and your internal links (link://) could be referred to symlink path too.
Shortcut would only redirect to different location so it would just do what links do.
Every implementation would be better than nothing, however i'd recomend to do it as a symbolic link.
Additionally symlink can be a solution when sb wants to put a note in 2 categories (2 folders) in the same time.