What the…
Their tuning chart is swiped from hotpipes.com, I notice.
“place the bag and chanter under your left arm”
New posture i don’t know about? 
Interesting - looks to me like the blowpipe has just as many holes as the chanter, which is still missing one! 
Those are actually temperature floatation balls…the kind you see in those tubes you use to check anti-freeze in your car’s radiator. Works to check humidity too.
OOOOOoooooooooooohhh. scratching head 
I see…ummmmmm
oh nevermind! LOL