參考資料: [K&R1, Sec. 2.6 p. 38, Secs. A7.11-12 pp. 190-1]; [K&R2, Sec. 2.6 p. 41, Secs. A7.14-15 pp. 207-8]; [ISO, Sec. 6.3.13, Sec. 6.3.14, Sec. 6.3.15]; [H&S, Sec. 7.7 pp. 217-8, Sec. 7.8 pp. 218-20, Sec. 7.12.1 p. 229]; [CT&P, Sec. 3.7 pp. 46-7]。
翻譯朱群英、孫雲, LaTeX2HTML 編譯 朱群英 (2005-06-23)