When set to Yes, it will enable the caching of pages if the client browser has cookie
capability. If the page has dynamic elements, it will not be cached. This
can improve performance especially on large pages, since the page does not
have to be parsed every time -- just the first. It does not make sense to
enable this while enabling StaticFly -- however catalogs with large numbers of items may wish to enable this.
A yes/no directive -- default is No.
PageCache yes