...and there's the ZEBRA code...let me have a closer look....er - why is it 'on strings'...or is this an 'alien antennae number'? oh I see...having watched a bit more....it's the TENT and the IN-TENT of the taschmanns...the generals' tent....where the plans were historically written out on krave-like parchment...and also a 'nod' to sue whalley and I, amongst the tent strings upon that summer camp...'eavesdropping' to what the teachers were up to....see previous notes upon what was to happen to pippa Morton...