<q> (quote) element, overview of, 66-67, 689-690
query strings, using with URLs, 100-101
QUERY_STRING variable in CGI, description of, 413
question mark (?)
as occurrence indicator, 838
using with URLs, 100-101
QuickTime video format
description of, 255
overview of, 257-260
" (double quote) HTML character entity, description of, 790
quotation mark (")
character entity for, 87
using with attributes, 4-5
quotations, overview of, 66-68. See also inline quotations