Problem: Antialiasing does not work in TEXTMARKERSYMBOL
Antialiasing does not work for a text created with TEXTMARKERSYMBOL
When the attribute 'fontstyle' is specified in the tag TEXTMARKERSYMBOL, the resulting text will not be antialiased, even when the attribute 'antialiasing' is set to true.
Solution or Workaround
This is a known limit at this time. If antialiasing is required, do not to use fontstyle in TEXTMARKERSYMBOL.