diff --git a/lib/ncdata/_core.py b/lib/ncdata/_core.py
index b0d7cb4..71bc06d 100644
--- a/lib/ncdata/_core.py
+++ b/lib/ncdata/_core.py
@@ -330,8 +330,8 @@ def copy(self):
         """
         Copy self.
 
-        This duplicates structure with new ncdata core objects, but does not duplicate
-        data arrays.  See :func:`ncdata.utils.ncdata_copy`.
+        This duplicates structure with all-new ncdata core objects, but does not
+        duplicate variable data arrays.  See :func:`ncdata.utils.ncdata_copy`.
         """
         from ncdata.utils import ncdata_copy
 
@@ -479,7 +479,7 @@ def copy(self):
         """
         Copy self.
 
-        Does not duplicate arrays oin data or attribute content.
+        Does not duplicate arrays in data content.
         See :func:`ncdata.utils.ncdata_copy`.
         """
         from ncdata.utils._copy import _attributes_copy
@@ -583,12 +583,7 @@ def __str__(self):  # noqa: D105
         return repr(self)
 
     def copy(self):
-        """
-        Copy self.
-
-        Does not duplicate array content.
-        See :func:`ncdata.utils.ncdata_copy`.
-        """
+        """Copy self, including any array value content."""
         return NcAttribute(self.name, self.value.copy())
 
     def __eq__(self, other):
diff --git a/lib/ncdata/utils/_copy.py b/lib/ncdata/utils/_copy.py
index 30e876b..f631df4 100644
--- a/lib/ncdata/utils/_copy.py
+++ b/lib/ncdata/utils/_copy.py
@@ -14,8 +14,8 @@ def ncdata_copy(ncdata: NcData) -> NcData:
     """
     Return a copy of the data.
 
-    The operation makes fresh copies of all ncdata objects, but does not copy arrays in
-    variable data.
+    The operation makes fresh copies of all ncdata objects, but does not copy variable
+    data arrays.
 
     Parameters
     ----------