Is Flash Cacle caching policy will cache LOB segments by default ?

Hello,

my question about FC and LOBs.

I read "Oracle Exadata Storage Server Software User's Guide", page 7-60, 7-61 and the documentation say we can use CELL_FLASH_CACHE clause for LOB segments.

For example use KEEP option if you need to cache LOBs.

But Oracle nothing say about default policy.

So, the question is:

What is the Flash Cacle caching policy for LOB segments by default ?

Cache ? Not cache ? For SecureFiles only, or for Basic (old LOBs) too...

I mean LOBs which have its separate segment, not inline LOBs.

And how the WriteBack mode influences to LOBs writes to FC ?