வரியுரு பாணி
Here, you can create a font style.
ஆசிய மொழி ஆதரவு
These commands can only be accessed after you enable support for Asian languages in LibreOffice - PreferencesTools - Options - Language Settings - Languages.
ஆசிய தளக்கோலம்
Sets the options for double-line writing for Asian languages. Select the characters in your text, and then choose this command.