Unicode is a character encoding standard developed by the Unicode Consortium that represents almost all written languages in the world. The Unicode character repertoire has multiple representation forms, including UTF-8, UTF-16, and UTF-32. Most Windows interfaces use the UTF-16 form. The Adapt It Unicode version uses UTF-16 also known as UCS-2.
For most purposes, you do not need to be concerned about how Adapt It stores its data.
Adapt It comes in two forms: Adapt It Regular and Adapt It Unicode. Adapt It Regular does not use Unicode. See Adapt It Regular versus Adapt It Unicode for more information.
Adapt It Advanced Topics Overview