For historical reasons the word 'Box' is often omitted (e.g., 'Diagonal
Scoot Back' means 'Diagonal Box Scoot Back'; 'Diagonal Circulate' means
'Diagonal Box Circulate'). EN: 40
Diagonal Coordinate | Motivate | Percolate | Perk Up | etc.
means to replace the first Circulate of the call with a Diagonal Box Circulate.
It doesn't mean to do the entire call within your Diagonal Box! Nowadays, callers
can be more explicit by saying something like
Initially Diagonal Box Motivate. EN: 50