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This package is based on R codes el.cen.EM, el.cen.EM2, el.trun.test emplikH1, emplikH2, emplikdisc.test and el.cen.test, etc. written by Mai Zhou. The code el.test is based on S code ELM() by Art Owen. el.test() can handle vector means as Ho (several mean parameters), but data must be uncensored. When dealing with censored data use el.cen.EM2() to handle vector means. Many other codes in this package can only handle one parameter in Ho. But that parameter can be mean/hazard/quantile, and can also take censored/truncated data. The name convention: el.xxx is for the parameter of mean. emplikxxx is for the parameter of hazard. Everything is written in R, so porting to Splus should be easy. I may put out another version that move some of the loops to C function. (Is there such need? this will also make the porting harder). Release History: Pre-beta 1998--1999 Version 0.1-2 Nov. 12, 2001 Version 0.2-1 Jan. 10, 2002 Version 0.3 Feb. 18, 2002 Version 0.4 Apr. 6, 2002 Version 0.5 Apr. 24, 2002 Version 0.5-1 Apr. 25, 2002 Version 0.6 May 13, 2002 Version 0.7 Oct. 12, 2002 Version 0.7-3 Jan. 12, 2003 Version 0.7-4 July 20, 2003 Version 0.8 March 18, 2004