sf::Font font;
font.loadFromFile(Path to the basic font of the operating system, eg. "C:/Windows/Fonts/ariblk.ttf");
fond.addFromFile(Path to my font); //loads the new font( not remove first loaded)
What I mean:
Font I: Load a,b,c,d,e,f...
Font II: Replace eg. a,b,c, //but not d becouse he hesn't got it