Index[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] [Z] u element 2nd UAAG (User Agent Accessibility Guidelines) UCS (Universal Character Set) UDP (User Datagram Protocol) ul element browser bugs nesting overview 2nd positioning and Ulead GIF Animator utility 2nd underlines 2nd underscore (_) attributes browser bugs naming conventions reserved target names variable names XML names unicasting Unicode character set code points markup and Numeric Character Reference overview quotation marks standards body World Wide Web and XML and Unicode Consortium 2nd unicode-bidi property (CSS) 2nd 3rd Uniform color palette units of measurement 2nd Universal Character Set (UCS) universal element selector (*) assigning color globally centering pages descendants and getElementsByTagName( ) method wildcards and Unix environment directory structure Flash and gamma settings PNG format and web palette unordered lists 2nd unshift( ) method URLs absolute 2nd encoding and forms and property values and query strings and slashes in 2nd 3rd usage statistics 2nd usemap attribute (img) User Agent Accessibility Guidelines (UAAG) user agent string user agents character encoding row groups and style sheets and th element User Datagram Protocol (UDP) user interfaces, WCAG 2nd user testing UTF-16 encoding 2nd UTF-32 encoding UTF-8 encoding 2nd 3rd 4th |