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toire。 wellknown ones include UTF8 and UTF16.[11] There are many other text encodings that predate Unicode, such as ASCII and ISO/IEC 8859。 their character repertoires in almost every case are subsets of the Unicode character set. ? XML allows the use of any of the Unicodedefined encodings, and any other encodings whose characters also appear in Unicode. XML also provides a mechanism whereby an XML processor can reliably, without any prior knowledge, determine which encoding is being used.[12] Encodings other than UTF8 and UTF16 will not necessarily be recognized by every XML parser. 樣例文本 C ? 一個(gè)網(wǎng)頁(yè)的讀者和作者都可以使用 CSS來決定文件的顏色、字體、排版等顯示特性。 CSS最主要的目的是將文件的結(jié)構(gòu)(用 HTML或其他相關(guān)的語言寫的)與文件的顯示( CSS)分隔開來。這個(gè)分隔有許多好處: ? 文件的可讀性被加強(qiáng) ? 文件的結(jié)構(gòu)更加靈活 ? 作者和讀者可以自己決定文件的顯示