def

kind

Kind name used to identity a value data type

meta

enum

Marker

is-a label

Bool

true or false

NA

not available

Number

floating point with optional unit

Str

Unicode string

Uri

Universal resource identifier

Ref

reference to an entity

Date

an ISO 8601 date as year, month, day: 2011-06-07

Time

an ISO 8601 time as hour, minute, seconds: 09:51:27.354

DateTime

an ISO 8601 timestamp followed by timezone name

Coord

geographic coordinate in latitude/longitude formatted as C(lat,lng)

XStr

extended string with type name

List

ordered sequence

Dict

key/value map

Grid

two dimensional tabular data collection

supertypes

val

Data value type

    scalar

Scalar is an atomic value kind

        str

Unicode string of characters