{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "4DVP",
  "description": "4DVP object",
  "type": "object",
	"properties": {
		"version": {"type": "integer"},
		"spreadJS": {"type": "object"},
		"meta": {"type": "object"},
		"dateCreation": {"type": "string"},
		"dateModified": {"type": "string"}
	},
	"required": ["version", "spreadJS"]
}