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R : Copyright 2000, The R Development Core Team
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R : Copyright 2001, The R Development Core Team
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Version 1.1.0 Under development (unstable) (March 13, 2000)
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Version 1.3.0 Under development (unstable) (2001-04-30)
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R is free software and comes with ABSOLUTELY NO WARRANTY.
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R is free software and comes with ABSOLUTELY NO WARRANTY.
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You are welcome to redistribute it under certain conditions.
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You are welcome to redistribute it under certain conditions.
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Type	"?license" or "?licence" for distribution details.
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Type `license()' or `licence()' for distribution details.
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R is a collaborative project with many contributors.
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R is a collaborative project with many contributors.
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Type	"?contributors" for a list.
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Type `contributors()' for more information.
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Type	"demo()" for some demos, "help()" for on-line help, or
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Type `demo()' for some demos, `help()' for on-line help, or
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    	"help.start()" for a HTML browser interface to help.
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`help.start()' for a HTML browser interface to help.
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Type	"q()" to quit R.
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Type `q()' to quit R.
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> #### Testing  UseMethod() and even more NextMethod()
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> #### Testing  UseMethod() and even more NextMethod()
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> ####
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> ####
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> 
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> 
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> ###-- Group methods
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> ###-- Group methods
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> abc(e1)
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> abc(e1)
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abc: Before dispatching; x=Class 'expression'   expression(sin(x))
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abc: Before dispatching; x=Class 'expression'   expression(sin(x))
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'expression' method of abc: abc.expression(e1) 
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'expression' method of abc: abc.expression(e1) 
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> abc(e0[[1]])
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> abc(e0[[1]])
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abc: Before dispatching; x=Class '('  language, mode "(": ( x
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abc: Before dispatching; x=Class '('  language, mode "(": ( x
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'(' method of abc: abc.((e0[[1]]) 
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'(' method of abc: "abc.("(e0[[1]]) 
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> abc(e1[[1]])
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> abc(e1[[1]])
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abc: Before dispatching; x=Class 'call'  language sin(x)
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abc: Before dispatching; x=Class 'call'  language sin(x)
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abc.default(e1[[1]])
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abc.default(e1[[1]])
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> 
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>