problem with Screen

Hi,


I am on:


 > uname-v

FreeBSD 8.2-RELEASE


I have the following .screenrc:


screen     pkg_info | less     0     pkg_info | less

screen     pkg_info              1     pkg_info -f


When I start the Screen, execute the command 'pkg_info | less' and 
'pkg_info-f' but in the end closes the screens.


Someone can tell me how should I put these commands for running the 
screens and remain open?


Thanks.