range(location-set) function returns returns a location set
containing one range for each location in the argument.
The range is the minimum range necessary to cover the entire location.
returns a location set containing the interiors of each of the locations in
function returns a location set that contains
one point representing the first point of each location in
the input location set.
returns the point immediately before the first
returns the set of points immediately before each
function acts the same as
start-point() except that it returns the
points immediately after each location in its input.