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] handheld media handwriting (resemblance of) HEAD element 2nd HEIGHT attribute height property help value, cursor property Helvetica type family hexadecimal numbers, specifying RGB colors HI element hidden keyword hidden value overflow property visibility property horizontal rule element. [See HR element] hover pseudo-class HR element HREF attribute, A element HSB (Hue Saturation Brightness) color model HSPACE attribute HTML (Hyper Text Markup Language) avoiding limitations converting text into images placing text in tables proprietary HTML extensions writing programs block-level elements building documents comments document trees Editorial Review Board (HTML ERB) elements 2nd empty elements extensions external style sheets @import declaration alternate style sheets author style sheets linking to style sheets MEDIA attribute persistent style sheets preferred style sheets hyperlinks images inline elements lists maintenance of preformatted text quick reference BODY element document structure HEAD element special characters text-level elements XHTML I space control HTML comment HTML element 2nd Hue Saturation Brightness model. [See HSB (Hue Saturation Brightness) color model] hyperlinks adding colors HyperText Markup Language. [See HTML] hypertext reference attribute. [See HREF attribute] hypothetical XML-based formats |