[Orgmode] Hiding/Narrowing dblocks and keywords

[Leonidas Tsampros]

Hello,

I'm a recent new happy org-mode user. While hacking around and using it
for various tasks/todos and schedules, it occured to me that keywords
and dynamic blocks take a lot of screen real estate while I do very
little editing on them.

Is there a way to have dblocks/keywords hidden/narrowed in a per buffer
manner?

Unfortuantely, I could not locate something similar in the manual or
google. I'm using Emacs 23.1 and Org 6.21b. 

Any input will be helpful.

Thanks,
Leonidas

PS: I'm not subscribed to this list, so please include me in the
replies.