This policy setting allows you to set the maximum number of shortcuts the system can display in the Recent Items menu on ...

"This policy setting allows you to set the maximum number of shortcuts the system can display in the Recent Items menu on the Start menu.

The Recent Items menu contains shortcuts to the nonprogram files the user has most recently opened.

If you enable this policy setting, the system displays the number of shortcuts specified by the policy setting.

If you disable or do not configure this policy setting, by default, the system displays shortcuts to the 10 most recently opened documents."