Insert a Unicode Decomposition TypeA Unicode decomposition type is on of the many Unicode properties that you can insert via the Insert Token button on the Create panel.

Every Unicode code point has exactly one value for the Decomposition_Type property. Code points with a value other than None are code points that represent characters that are variants of other characters, such as the circled characters shown in the screen shot. Though each value is just a simple word, Unicode does define aliases for many of those words that shorten the values to 3 or 4 letters. Tick “short decomposition type names” if you prefer the shorter aliases.