| Subject | English | Tamil |
| comp., MS | optional attendee | விருப்பமான பங்கேற்பாளர் (A person who is not required to attend a meeting) |
| comp., MS | optional hyphen | விருப்பச் சிறுகோடு (" A hyphen that is used to control where a word or phrase breaks if it falls at the end of a line. For example, you can specify that the word "nonprinting" breaks as "non-printing" rather than "nonprint-ing.") |