gistfile1.json

{"op":"chain", "filter":[
  {"op":"field", "from":"UID"},

  {"op":"equals", "left":"FIELD_ONE", "right":"FIELD_TWO", "not":true},

  {"op":"concat", "in":["FOO", "BAR"], "out":"OUTPUT", "join":":"},

  {"op":"num", "columns":["END", "START", "WALL"], "define":"c0,c1,sub,
   v1000,ddiv,toint,v2,set"},
]}