I want to be able to say: * field = a, b, c

* modifier[0] = #missing
* modifier[1] = #text
* modifier[2] = #not
* modifier[3] = #in
* modifier[4] = #not-in
* modifier[5] = #below
* modifier[6] = #above
* modifier[7] = #ofType

Should allow me to say:
measure = #missing, #text, #not, #in, #not-in, #below, #above, #ofType