akr	2009-03-28 23:49:49 +0900 (Sat, 28 Mar 2009)

  New Revision: 23092

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=23092

  Log:
    rdoc update.

  Modified files:
    trunk/io.c

Index: io.c
===================================================================
--- io.c	(revision 23091)
+++ io.c	(revision 23092)
@@ -4884,6 +4884,8 @@
  *  standard input and output will be connected to the returned
  *  <code>IO</code> object.
  *
+ *  The PID of the started process can be obtained by IO#pid method.
+ *
  *  _cmd_ is a string or an array as follows.
  *
  *    cmd:

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