Assertion: operating system's application | /r/HasProperty | written with rpl
Facets:
value: to ensure data validation
type: PURPOSE
Source sentences:
text: A simple text editor for file-system records was provided, but the editor was only suitable for system maintenance, and could not lock records, so most applications were written with the other tools such as Batch, RPL, or the BASIC language so as to ensure data validation and allow record locking.