Transforming superscripts into baseline equivalents may not be appropriate however for rich text software, because the superscript information is lost in the process. To allow for this distinction, the Unicode character database contains compatibility formatting tags that provide additional details on the compatibility transformation. In the case of typographic ligatures, this tag is simply codice_1, while for the superscript it is codice_2. Rich text standards like HTML take into account the compatibility tags. For instance HTML uses its own markup to position a U+0035 in a superscript position.