It can be used for various purposes.
Shella Script How to access all alternate characters, using Windows Character Map with Photoshop: Shella scripts are encoded with Unicode PUA, which allows full access to all additional characters without special design software. Mac users can use Font Book, and Windows users can use Character Map to view and copy any extra characters to paste into your favorite text editor/app. such as titles, signatures, logos, correspondence, wedding invitations, letterheads, nameplates, labels, newsletters, posters, badges, etc.