diff --git a/docs/source/pythonapi/base.rst b/docs/source/pythonapi/base.rst
index dde1c9119..e6cf1e1cc 100644
--- a/docs/source/pythonapi/base.rst
+++ b/docs/source/pythonapi/base.rst
@@ -117,6 +117,7 @@ Constructing Tallies
    openmc.UniverseFilter
    openmc.MaterialFilter
    openmc.CellFilter
+   openmc.CellFromFilter
    openmc.CellbornFilter
    openmc.SurfaceFilter
    openmc.MeshFilter
diff --git a/docs/source/usersguide/tallies.rst b/docs/source/usersguide/tallies.rst
index 3ee2e99d7..46ad97721 100644
--- a/docs/source/usersguide/tallies.rst
+++ b/docs/source/usersguide/tallies.rst
@@ -266,7 +266,15 @@ The following tables show all valid scores:
     |                      |particle. Note that this score can only be used if |
     |                      |a mesh filter has been specified. Furthermore, it  |
     |                      |may not be used in conjunction with any other      |
-    |                      |score.                                             |
+    |                      |score. Only energy and mesh filters may be used.   |
+    +----------------------+---------------------------------------------------+
+    |partial_current       |Partial currents on any surface previously defined |
+    |                      |in the geometry. Units are particles per source    |
+    |                      |particle. Note that this score cannot be used with |
+    |                      |a current score or a surface or mesh filter.       |
+    |                      |It may be used in conjunction with any other score.|
+    |                      |Surfaces can be defined with cell_from and cell    |
+    |                      |(to) filters.                                      |
     +----------------------+---------------------------------------------------+
     |events                |Number of scoring events. Units are events per     |
     |                      |source particle.                                   |
diff --git a/openmc/filter.py b/openmc/filter.py
index 9382c333b..e822b9553 100644
--- a/openmc/filter.py
+++ b/openmc/filter.py
@@ -603,13 +603,14 @@ class CellFilter(WithIDFilter):
     def bins(self, bins):
         self._smart_set_bins(bins, openmc.Cell)
 
+
 class CellFromFilter(WithIDFilter):
-    """Bins tally on which couple of cells the neutrons came from.
+    """Bins tally on which Cell the neutron came from.
 
     Parameters
     ----------
     bins : openmc.Cell, Integral, or iterable thereof
-        The Cells to tally. Either openmc.Cell objects or their
+        The Cell(s) to tally. Either openmc.Cell objects or their
         Integral ID numbers can be used.
     filter_id : int
         Unique identifier for the filter
@@ -634,38 +635,7 @@ class CellFromFilter(WithIDFilter):
     @bins.setter
     def bins(self, bins):
         self._smart_set_bins(bins, openmc.Cell)
-    
-class CellToFilter(WithIDFilter):
-    """Bins tally on which couple of cells the neutrons went to. 
 
-    Parameters
-    ----------
-    bins : openmc.Cell, Integral, or iterable thereof
-        The Cells to tally. Either openmc.Cell objects or their
-        Integral ID numbers can be used.
-    filter_id : int
-        Unique identifier for the filter
-
-    Attributes
-    ----------
-    bins : Integral or Iterable of Integral
-        openmc.Cell IDs.
-    id : int
-        Unique identifier for the filter
-    num_bins : Integral
-        The number of filter bins
-    stride : Integral
-        The number of filter, nuclide and score bins within each of this
-        filter's bins.
-
-    """
-    @property
-    def bins(self):
-        return self._bins
-      
-    @bins.setter
-    def bins(self, bins):
-        self._smart_set_bins(bins, openmc.Cell)
 
 class CellbornFilter(WithIDFilter):
     """Bins tally events based on which Cell the neutron was born in.