Location: Layout>Instance Display>Unhide
The Unblank function is used, simply, to un-blank instance-specific entities that had been blanked.
Using the Function:
Select Unhide from the Layout>Instance Display submenu.
Select the instance that contains the entities you had blanked. The blanked entities are displayed as dashed lines.
Select the entity(s) you want to redisplay, using the selection menu, and select ACCEPT. The entities you had selected are redisplayed inside the instance.