.. index::
   single: G7 Reference Manual; Y
   single: G7 Command; yearformat 
   
   
*G7* Commands: Y
================


.. _G7RMyearformat:

| **yearformat(yf) <format>**
|   *G7* solved the "year 2000" problem long ago, by representing the year 2000 as "100", 2010 as "110" and so on.  However, more recent versions of *G7* are even smarter, in that they can take either a 2-digit or 4-digit date, and convert it internally into a "G Date".

   You can provide control over how you would like these dates to print out in *print*, *matpr* or *graph* commands by using the *yearformat* (*yf*) command.

   The possible values for <format> are:

   :4: All dates 4-digit, i.e. 1977, 2000, 2005
   :3: 2 or 3 digit dates, 77, 100, 105
   :2: All dates 2-digit, i.e. 77, 00, 05

   Related Topics: Dates in *G7*, :ref:`save <G7RMsave>`