HP 50G: Function KST - What Does It Do?

[Gerald H]

A fine humour, Csaba, clearly you've been learning from that great English writer George Mikes

https://en.wikipedia.org/wiki/George_Mikes

who I love to quote:

“In England it is bad manners to be clever, to assert something confidently. It may be your own personal view that two and two make four, but you must not state it in a self-assured way, because this is a democratic country and others may be of a different opinion.”
― George Mikes, How To Be A Brit

But you shouldn't believe all you read.