*Greek extended* Unicode block.
5. Open theta has been replaced with closed theta in slot 03B8 and
rules ss05 and ss06 have been adjusted accordingly.
-6. **Oldstyle numerals**: These have been designed by Antonis
- Tsolomitis for regular and bold series and can be selected by
- `RawFeature=onum`.
+6. **Oldstyle numerals**: These have been designed by Antonis Tsolomitis for
+ regular and bold series and can be selected by `RawFeature=onum`. (Those
+ for italic and bolditalic have been designed by R. Alessi.)
7. **Math Font**: This is a major and long-awaited enhancement
to Old Standard. The math font has been designed by Antonis
Tsolomitis from an old French book published by Gauthier-Villars