DefaultPlainFont
if (fSettings->DefaultPlainFont() == *gFontManager->DefaultPlainFont()
float fontSize = fSettings->DefaultPlainFont().Size();
const_cast<ServerFont&>(fSettings->DefaultPlainFont()).SetSize(fontSize);
fPlainFont = *gFontManager->DefaultPlainFont();
font = fSettings->DefaultPlainFont();
const ServerFont& DefaultPlainFont() const;
font = *gFontManager->DefaultPlainFont();
*this = *gFontManager->DefaultPlainFont();
const ServerFont* DefaultPlainFont() const;