Symbols

underlined text : The <u> Tag
uniform resource locators : URLs
unnamed GET parameters : Using unnamed parameters with GET applications
unordered lists : Unordered Lists
- custom bullets : Custom Bullets
- nested : Nested Unordered Lists
unsafe characters : Handling reserved and unsafe characters
URLs (uniform resource locators)
- URLs
- Appearances Can Deceive
- Referencing Documents: The URL
- case sensitivity of : The Syntax of a Tag
- to cgi-bin directory : The action attribute
- for FTP : The ftp URL
- for news : The news URL
- for nntp : The nntp URL
- for Gopher : The gopher URL
- linking into frames : The src attribute
- for local files : The file URL
- mailto : The mailto URL
- query : The query URL
- randomly generating : random URL generator
- relative versus absolute : Absolute and Relative URLs
- for telnet : The telnet URL
- unsafe characters in : Handling reserved and unsafe characters
URN (uniform resource name) attribute (<A> tag) : The urn attribute
URN (uniform resource name) attribute (<LINK> tag) : The urn attribute
USEMAP (image map) attribute (<IMG> tag)
- The ismap and usemap attributes
- The usemap <img> Attribute
usernames
- in telnet URLs : The telnet user and password
usernames in FTP URLs
- in FTP URLs : The ftp user and password
users