Hello & World

World & Universe

Hi
    non breaking space ( ) or  
    narrow no-break space : ( ) (no character reference available)
    en space :   or ( )
    em space :   or ( )
    3-per-em space :   or ( )
    4-per-em space :   or ( )
    6-per-em space :   (no character reference available)
    figure space :   or   
    punctuation space :   or ( ) 
    thin space :   or ( )
    hair space :   or ( )