`get', `put', and `remprop' have been generalized to allow you to set
and retrieve properties on many different kinds of objects: symbols,
strings, faces, glyphs, and extents (for extents, however, this is not
-yet implemented). They are joined by a new function `object-props'
+yet implemented). They are joined by a new function `object-plist'
that returns all of the properties that have been set on an object.
New functions `plists-eq' and `plists-equal' are provided for