Any adventurous bitcoiner out there want to test a miniscript script?

I don’t understand the _v part of the and statement…

andor(multi(3,keyA,keyB,keyC),older(4032),andor(multi(2,keyAA,keyBB),older(32768),and_v(v:pk(keyAAA),after(1200000))))

(Formatted for humans):

andor(

multi(3, keyA, keyB, keyC),

older(4032),

andor(

multi(2, keyAA, keyBB),

older(32768),

and_v(

v:pk(keyAAA),

after(1200000)))

)

But as far as I can tell, this script does exactly what one thinks it should.