Local History

I am new to Websphere and am using 5.1.2.6 of WDS client.  I was reading in
the Websphere Development Studio Client for iSeries V5.1.2 Redbook about the
Local History feature.  It states :

Local history
A local history of a file is maintained by the tool. The default settings
allow you to save the last 50 versions of a file for at least seven days. If
you make a mistake and want to go back to an older version of a file, you
don’t need to have a team environment installed. You can use your
local history feature.
To change the default setting for the local history feature, select Window
→Preferences. On the Preferences window, expand the Workbench tree and
select Local History.  To use this feature, right-click any file in the
Navigator view and select Replace With →Local History. The workbench shows
you the list of available versions and the compare utility.


I checked in my Window Preferences and it was set to 50 versions for 7 days
like the manual stated.  So I was curious on restoring from Local History so
I changed a RPG member and Right Clicked on the member but I don’t see a
Replace With option anywhere.  Since it does not exist at the RSE
Perspective then where does this feature exist?