A switch to control the assumed role of the logged in user. The property is set as a property of the user's private space.
Some macros provide a different view for authors (with editing permissions), readers (without editing permissions), and printers (like reader and applying Print Quirk Modes). This property allows to change the behaviour of macros without touching the user's privileges.
If an author wants to see, how a document is presented to a reader, the property pretend-being-a
is set to reader
.