Attributes contain extra information about the value.
Attributes can be attached to any Glish value. In this example, the attribute name is shape , but the name can be any string. If, however, the attribute name contains non-standard characters, the attribute name must be within quotes. When more than one attribute is selected with square brackets, the result is a record with field names that are the selected attributes, and the values of the fields are the corresponding attribute values. This operator can be assigned to as well.