| Property | Expected Type | description |
|---|---|---|
| defaultValue | Thing Text | The default value of the input. For properties that expect a literal, the default is a literal value, for properties that expect an object, it's an ID reference to one of the current values. |
| maxValue | Number | The upper value of some characteristic or property. |
| minValue | Number | The lower value of some characteristic or property. |
| multipleValues | Boolean | Whether multiple values are allowed for the property. Default is false. |
| readonlyValue | Boolean | Whether or not a property is mutable. Default is false. Specifying this for a property that also has a value makes it act similar to a "hidden" input in an HTML form. |
| stepValue | Number | The stepValue attribute indicates the granularity that is expected (and required) of the value in a PropertyValueSpecification. |
| valueMaxLength | Number | Specifies the allowed range for number of characters in a literal value. |
| valueMinLength | Number | Specifies the minimum allowed range for number of characters in a literal value. |
| valueName | Text | Indicates the name of the PropertyValueSpecification to be used in URL templates and form encoding in a manner analogous to HTML's input@name. |
| valuePattern | Text | Specifies a regular expression for testing literal values according to the HTML spec. |
| valueRequired | Boolean | Whether the property must be filled in to complete the action. Default is false. |
| Property | Expected Type | description |
|---|---|---|
| additionalType | URL | An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally. |
| alternateName | Text | An alias for the item. |
| description | Text | A description of the item. |
| disambiguatingDescription | Text | A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation. |
| identifier | The identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc. | |
| image | URL ImageObject | An image of the item. This can be a URL or a fully described ImageObject. |
| instanceOf | Type to which this subject belongs. Use for membership in a value set (Enumeration), not inheritance. Example: K2 instanceOf mountain; volcano subClassOf mountain. | |
| mainEntityOfPage | URL CreativeWork | Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details. |
| name | Text | The name of the item. |
| potentialAction | Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role. | |
| sameAs | URL | URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website. |
| subjectOf | A CreativeWork or Event about this Thing. | |
| url | URL | URL of the item. |