\espressivo direction

[Graham Percival]

Since \espressivo is a hack of cresc/decr, it should be below the staff 
by default (currently it is not).  How would I change scm/script.scm to 
fix this?

         ("espressivo" .
    ((avoid-slur . around)
     (quantize-position . #t)
     (script-stencil . (feta . ("espr" .  "espr")))
     (side-relative-direction . -1)))

Would I use (direction . -1)  ?  Many entries contain a 
(side-relative-direction) and a (direction); how do those interact?

Cheers,
- Graham