Signed, 'signed' means signed either personally or by an agent duly authorised in this behalf, Nanchand Gangaram Shetji v. Mallappa Mahalingappa Sadalge, AIR 1976 SC 835 (843): (1976) 2 SCC 429: (1976) 3 SCR 287.
As stated in Black's Law Dictionary (1951 Edition--See now 1999 Edition) speaking generally when a person attaches his signature to a written document he does so in token of knowledge, or acceptance. According to Chambers New English Dictionary, the word 'sign' means a mark with a meaning, Municipal Corporation of Greater Bombay v. P.S. Malvenkar, AIR 1978 SC 1380: (1978) 3 SCC 78: (1978) 3 SCR 1000.
Save in the case of a judgment or decree, includes stamped. [Code of Civil Procedure, 1908, s. 2(20)]