// object/texture/etc. transformation
// do a predeclared translate/rotate/scale combo
// e.g.:
#declare Leaf_Orientation =
transform {
  scale 4.0
  rotate 30*z
  translate 2*y
}

transform {
  Leaf_Orientation    // transform an object
  //scale 0.5
  //rotate 45*x
  //transform {...}   // optional further transforms
}