[otrs] $Env{"PendingDateString"}

hi, where is $Env{"PendingDateString"} defined? what file is it in? i've grepped all the files in Kernel/Output/HTML/Standard and can't find it there. i'll like to set the default PendingDateString to a week in the future instead of 24 hours in the future. how can i do that? thanks, ~steven