Index X

[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z]

XHTML 
    (Extensible Hypertext Markup Language)  2nd  3rd 
    structuring pages with 
    transition to  2nd  3rd 
    versus HTML  2nd 
XML (extensible markup language)