akr	2011-01-18 23:05:39 +0900 (Tue, 18 Jan 2011)

  New Revision: 30594

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=30594

  Log:
    update doc.

  Modified files:
    trunk/time.c

Index: time.c
===================================================================
--- time.c	(revision 30593)
+++ time.c	(revision 30594)
@@ -4364,8 +4364,8 @@
  *    Date (Year, Month, Day):
  *      %Y - Year with century (can be negative, 4 digits at least)
  *              -0001, 0000, 1995, 2009, 14292, etc.
- *      %C - Century (20 in 2009)
- *      %y - Year without a century (00..99)
+ *      %C - year / 100 (round down.  20 in 2009)
+ *      %y - year % 100 (00..99)
  *      
  *      %m - Month of the year, zero-padded (01..12)
  *              %_m  blank-padded ( 1..12)

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