v3.0.0+
| Status: | effective |
| Progress: | 100% |
| Version: | 3.0.0+ |
This help page lists the annotable special properties. Annotable special properties may be manually annotated by the user on wiki pages.
The following table gives an overview of all 25 manually annotable special properties provided by Semantic MediaWiki:
| Name | Description | Help page | Since | Key |
|---|---|---|---|---|
| Allows value | Lists one permissible value for a property | Special property "Allows value" | 1.0 | _PVAL |
| Corresponds to | Gives the conversion factor for some unit of a physical quantity and the possible names for that unit | Special property "Corresponds to" | 1.0 | _CONV |
| Display units | Specifies the a comma-separated list of units or formats that a property should use in display | Special property "Display units" | 1.0 | _UNIT |
| Equivalent URI | Marks a page in the wiki as having a well-known meaning beyond this wiki, in an external URI | Special property "Equivalent URI" | 1.0 | _URI |
| Has type | Assigns a datatype to a property | Special property "Has type" | 1.0 | _TYPE |
| Imported from | Allows users to reuse elements of external vocabularies directly within the wiki | Special property "Imported from" | 1.0 | _IMPO |
| Provides service | Adds service links to properties | Special property "Provides service" | 1.0 | _SERV |
| Subproperty of | Lets you indicate that one property is a subproperty of another | Special property "Subproperty of" | 1.0 | _SUBP |
| Has fields | Defines a short list of fields with a fixed type and order for datatype Record | Special property "Has fields" | 1.5.0 | _LIST |
| Allows pattern | Pattern to match a permissible value | Special property "Allows pattern" | 2.4.0 | _PVAP |
| Display precision of | Allows to define the display precision in digits | Special property "Display precision of" | 2.4.0 | _PREC |
| Display title of | Holds a specific denote title for an entity | Special property "Display title of" | 2.4.0 | _DTITLE |
| Has property description | Adds localizable context help to properties | Special property "Has property description" | 2.4.0 | _PDESC |
| Has uniqueness constraint | Allows to restrict value annotation to be unique | Special property "Has uniqueness constraint" | 2.4.0 | _PVUC |
| Language code | Handles BCP47 conform language codes specifying the language of the annotated text | Special property "Language code" | 2.4.0 | _LCODE |
| Allows value list | Adds a reference to a list of permissible values for a property | Special property "Allows value list" | 2.5.0 | _PVALI |
| External formatter URI | Declares an external URL with a place holder $1 | Special property "External formatter URI" | 2.5.0 | _PEFU |
| External identifier | Specifies an external identifier | Special property "External identifier" | 2.5.0 | _PEID |
| Has preferred property label | Adds localizable labels to a property | Special property "Has preferred property label" | 2.5.0 | _PPLB |
| Is edit protected | Stores the status of an edit restriction of a page | Special property "Is edit protected" | 2.5.0 | _EDIP |
| Is property group | Marks a category for holding properties belonging to a property group | Special property "Is property group" | 3.0.0 | _PPGR |
Conversely all special properties not listed here are not manually annotable by the user.
Special property "Subcategory of"Lets you explicitly indicate that one category is a subcategory of another is only a manually annotable special property if option
SMW_CAT_HIERARCHY to configuration parameter configuration parameter $smwgCategoryFeaturesSets the behaviour of the query features related to category handling was removed from it".
