An anonymous, local scope, value An anonymous, local scope, value Named (referenced), global scope, constant value Named (referenced), local scope, variable value An anonymous quantity, local scope, with a unit, (possibly of a given type) quantity Named (referenced), global scope,(possibly of a given type) quantity An anonymous, 3 dimensional, local scope, vector of doubles A bi-dimensional matrix of doubles Named (referenced), 3 dimensional, global scope, vector of doubles An anonymous, 3 dimensional, local scope, with a unit, (possibly of a given type) quantity vector Named (referenced), 3 dimensional, global scope, with a unit, (possibly of a given type) quantity vector Local reference to an element of a named type Reference to an external file containing sub-volume information List of local references to a set of element of a named type Auxiliary information like sensitive detector declaration, etc.