diff --git a/doc/interop.rst b/doc/interop.rst
index 0f6b00039b80c008f225f9ad9c083842b57d22c7..b07ac095a8a3769f06fc2fd0b2202fcf0c40ee41 100644
--- a/doc/interop.rst
+++ b/doc/interop.rst
@@ -1,7 +1,8 @@
-interop
-=======
+Interoperability with Other Discretization Packages
+===================================================
 
-Interfacing with data outside of :mod:`meshmode`.
+Functionality in this subpackage helps import and export data to/from other
+pieces of software, typically PDE solvers.
 
 
 Firedrake
@@ -30,7 +31,7 @@ Converting between :mod:`firedrake` and :mod:`meshmode` is in general
 straightforward. Some language is different:
 
 * In a mesh, a :mod:`meshmode` "element" is a :mod:`firedrake` "cell"
-* A :mod:`meshmode` :class:`Discretization` is a :mod:`firedrake`
+* A :class:`meshmode.Discretization` is a :mod:`firedrake`
   :class:`WithGeometry`, usually
   created by calling the function :func:`firedrake.functionspace.FunctionSpace`
   and referred to as a "function space"
diff --git a/meshmode/interop/firedrake/connection.py b/meshmode/interop/firedrake/connection.py
index e2f202a0a836d2aecc2eb33acb96add1f9201832..a73ec5ef2022d6d5c12aa215ace34ff2042052be 100644
--- a/meshmode/interop/firedrake/connection.py
+++ b/meshmode/interop/firedrake/connection.py
@@ -380,3 +380,5 @@ class ToFiredrakeConnection:
         """
 
 # }}}
+
+# vim: foldmethod=marker
diff --git a/meshmode/interop/firedrake/mesh.py b/meshmode/interop/firedrake/mesh.py
index 49e87408da0a9ab7684bc33de5d28eabcfe3221e..1718fb4efeb17e7aaa27c3a54aa61302da2a0989 100644
--- a/meshmode/interop/firedrake/mesh.py
+++ b/meshmode/interop/firedrake/mesh.py
@@ -594,3 +594,5 @@ def export_mesh_to_firedrake(mesh, group_nr=None, comm=None):
     return fd_mesh.Mesh(coords, reorder=False)
 
 # }}}
+
+# vim: foldmethod=marker
diff --git a/meshmode/interop/firedrake/reference_cell.py b/meshmode/interop/firedrake/reference_cell.py
index 153c566795f38c77a3db053d643209fddb093aca..a102a9390a88f351794687f56d56fd1cc9da9ab9 100644
--- a/meshmode/interop/firedrake/reference_cell.py
+++ b/meshmode/interop/firedrake/reference_cell.py
@@ -136,3 +136,5 @@ def get_finat_element_unit_nodes(finat_element):
     return unit_nodes
 
 # }}}
+
+# vim: foldmethod=marker
diff --git a/test/test_firedrake_interop.py b/test/test_firedrake_interop.py
index 8bafdadf4e28ec1a29da6a87b861c0e656b175bc..3f37e4affafc0a25e470112e73cbeee7fbc4dabd 100644
--- a/test/test_firedrake_interop.py
+++ b/test/test_firedrake_interop.py
@@ -239,3 +239,5 @@ def test_vector_idempotency(ctx_factory, fdrake_mesh,
     check_idempotency(fdrake_connection, fdrake_unique)
 
 # }}}
+
+# vim: foldmethod=marker