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Index
R
radio buttons, using with forms, 382-383
» (closing double-angle quotes) HTML character entity, description of, 802
rating systems for Web sites, examples of, 528-529
readonly form field attribute, explanation of, 396-397
RealAudioembedding, 253-254
overview of, 251-254
RealNetworks Web address, 251
RealProducer Web address, 252
RealVideo Web address, 260
rect attribute, using with <area> tag, 122-123
redirection pages, using with Web sites, 540-541
® (registered trademark symbol) HTML character entity, description of, 87, 801
regions, positioning and sizing with CSS2 properties, 333-336
rel attributeusing, 117
using next and prefetch values with, 133
value and description of, 113
rel values for links, table of, 129-130
relative URLsdisadvantages of, 108
example of, 93, 110
overview of, 108-109
relative value of CSS2 position property, explanation of, 333, 336
REMOTE_* variables in CGI, descriptions of, 413-414
REMOTE_USER variable in CGI, description of, 413
REQUEST_METHOD variable in CGI, description of, 413
Reset and Submit buttons, using with forms, 384-385
resourcesfor frames, 246
for Web design, 8, 27
rev attributeusing, 117
using with <link> tag, 129
value and description of, 113
RFC 1521 Web address, 520
RGB color values in CSS, overview of, 835
RGB to hexadecimal color conversion chart, 828-829
RGB values specification, CSS1 support for, 307
richness property in CSS2, overview of, 355
right alignment, example of, 59-62
right value, using with align attribute, 156
rlt (right to left) text direction, example of, 57-58
Robot Exclusion protocol, explanation of, 533
robotscontrolling with <meta> element, 534
excluding from search engines, 532-533
limiting access of, 533-534
robots.txt file, explanation of, 533-534
rollover buttonsapplying to scripting and anchors, 117
script for, 465-467
root directory, explanation of, 96
root element, <html> tag as, 14
rowspan attribute, using with tables, 199-201
.rpm file extension, explanation of, 253-254
RSACi rating system, explanation of, 529
RSS (Really Simple Syndication), overview of, 572-573
<rt> (ruby text) element, overview of, 690-691
ruby-* extensions to CSS in Microsoft, overview of, 784-785
ruby element, overview of, 691-692
rules attribute, using with tables, 225
run-length encoding, role in GIF images, 142
