Under this theory, adverse possession grants only those rights in the disseized property that are 'taken' by the disseisor. For example, a disseisor might choose to take an easement rather than the entire fee title to the property. In this manner, it is possible to disseize an easement, under the legal doctrine of prescription. This must also be done openly but need not be exclusive. Prescription is governed by different statutory and common law time limits to adverse possession. It is common practice in cities such as New York, where builders often leave sidewalk space or plazas in front of their buildings to meet zoning requirements, to close public areas they own periodically to prevent the creation of a permanent easement that would cloud their exclusive property rights. For the same reason, city sidewalks may have embedded markers along the property line around a plaza or open area announcing "This Space Not Dedicated" to indicate that although the public may use the space within the markers, it is still private property.