| Class | Description | 
|---|---|
| AbstractSystemProperty | 
 Abstract class providing standard behavior and helper methods for a
  
SystemProperty. | 
| AbstractUserSystemProperty | 
 Abstract class providing base functionality for a user-typed  
SystemProperty. | 
| CommentsSystemProperty | 
SystemProperty which represents the comments of a content. | 
| ContentTypeSystemProperty | 
SystemProperty which represents the content types (and optionally mixins) of a content. | 
| ContributorSystemProperty | 
SystemProperty which represents the last contributor of a content. | 
| CreationDateSystemProperty | 
SystemProperty which represents the creation date of a content. | 
| CreatorSystemProperty | 
SystemProperty which represents the creator of a content. | 
| FulltextSystemProperty | 
SystemProperty which represents the full textual content of a Content. | 
| LanguageSystemProperty | 
SystemProperty which represents the language of a Content. | 
| LastMajorValidationSystemProperty | 
SystemProperty which represents the last major validation date of a content. | 
| LastModifiedSystemProperty | 
SystemProperty which represents the last modification date of a Content. | 
| LastValidationSystemProperty | 
SystemProperty which represents the last validation date of a content. | 
| TagsSystemProperty | 
SystemProperty which represents the tags of a Content. | 
| WorkflowStepSystemProperty | 
SystemProperty which represents the current workflow step ID of a content. |