Forums Scripts & Popups Removing wunwanted lines from a custom window

When I load a list into a custom window I get a bunch of unwanted information. I wrote this to strip out the unwanted information. But it seems I have to run it 3 times to clear all the unwanted lines out of the window. What I have done is if ! is not in first charitor of the line then it removes the line.
but some of the lines use = or spaces the script seems to over look some of those lines. but it does remove some of them.

alias strip {
var %count = 1
while ( %count <= $line(@test,0) ) {
if ( $left($gettok($line(@test,%count),1,32),1) != $chr(33) ) {
dline @test %count
}
inc %count
}
}