H

hazardous materials, shipping, 189

headers

Del.icio.us API, 279

email, 55–56

height, image, 43–44

Heredoc syntax, 248

highlighting eBay listings, 234

homepage, eBay featured listing, 234

hostName element, Google, 119–120

hours, RSS feed, skipping, 324

HTML (Hypertext Markup Language)

broken, handling with Tidy

configuration options, 50–52

described, 47–48

sample output, 48–50

capitalization, 15

conversion to XHTML, 11

encoded data, plain text versus, 27

image tags

eBay, 233

processing, 40

NWS output, 269–270

output, specifying, 51

page URL, 322

text, enclosing, 51

white space, 15

HTTP

authentication, 289–291

Content-Type header tag, 68

Del.icio.us API authentication, 277

Google transaction, 112–114

PayPal Instant Payment Notification, 240

Web feed transfers, 8

HTTPS

eBay official time, obtaining, 210–211

PayPal Instant Payment Notification, 240

Hypertext Markup Language. See HTML