f_word.ihlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{* 30nov2004}{...}
{phang}
{cmd:word(}{it:s}{cmd:,}{it:n}{cmd:)} returns the {it:n}th
	word in {it:s}.  Positive numbers count words from the beginning of
	{it:s} (1 = first word), while negative numbers count words from the
	end of {it:s} (-1 = last word).  Returns {it:missing} ("")
	if {it:n} is a missing value.{p_end}