[TYPO3-english] Check if an area doesn't contain elements

[Jeppe Donslund]

Hi,

I would like to know if it is possible to check wether an area contains 
elements or not.
I have 3 elements in the bottom of my page. The user can but content in 
these elements but if they leave it empty on a page TYPO3 should use 
content from an other page using this TypoScript:

lib.element1 = COA
lib.element1 {
    10 = RECORDS
    10.dontcheckPid = 1
    10.tables = tt_content
    10.source = 49
}

I guess this is possible, I just don't know where to look for it :-)

Regards
Jeppe Donslund