In SOLIDWORKS drawings, you can link the value of a drawing's custom property to the drawing's title block by using the $PRP prefix. In SOLIDWORKS PDM, you can link a data card variable to the same custom property to display the text in the data card.
Similarly, you can display the value of a model's custom property in both the model's drawing and the model's data card by using a $PRPSHEET property link.
When $PRP property links are used to update drawings using the drawing's custom properties, the updates can be viewed in eDrawings without having to open and resave the drawings in SOLIDWORKS.
When $PRPSHEET property links are used to update drawings using a model's custom properties, the updates cannot be viewed in eDrawings until you open and resave the drawings in SOLIDWORKS.