Doubt regarding PFS

Does SQL Server use PFS to check whether a page is allocated or not if the
table has a clustered index.
Regards
BalajiPFS is used for determining if there is enough free space on the page for
the row but only on Heaps.
--
Andrew J. Kelly SQL MVP
Solid Quality Mentors
"Balaji" <Balaji@.discussions.microsoft.com> wrote in message
news:C5E97806-A784-4B47-9746-EA01C5A3F84A@.microsoft.com...
> Does SQL Server use PFS to check whether a page is allocated or not if the
> table has a clustered index.
> Regards
> Balaji