Feature: Add ◌ (dotted circle) under AltGr
Using the generic dotted circle character also shows the relative positioning of the diacritic.
The Thai script being an abugida, has diacritics for vowels, tone markers and others. Having a dotted circle would make it easier to have meta discussion about the Thai language.
Relevant character codes: https://www.fileformat.info/info/unicode/char/25cc/index.htm