Insert a Unicode Bidi Class

A Unicode bidi class 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 Bidi_Class property. This property is used by bidirectional text editing algorithms.

The values for the Bidi_Class property are 1 to 3 uppercase letters. These can be a little cryptic if you’re not familiar with the inner workings of bidirectional text editing algorithms. Fortunately, Unicode defines a more descriptive alias for each bidi class value. If your application supports them then you can tick “long bidi class aliases” to use one of those in your regular expression instead.

Select the class you want from the list. The names and aliases of the bidi class values have not changed since the property was introduced. But there has been some change to the code points that the values are assigned to in successive Unicode versions.