diff --git a/docs/contents/cvode.rst b/docs/contents/cvode.rst
index 87ecdb309..367e160d4 100644
--- a/docs/contents/cvode.rst
+++ b/docs/contents/cvode.rst
@@ -20,9 +20,10 @@ is satisfied:
 In NMODL, all ``KINETIC`` blocks are internally first converted to
 ``DERIVATIVE`` blocks. The ``DERIVATIVE`` block is then converted to a
 ``CVODE`` block, which contains two parts; the first part contains the update
-step for linear systems, while the second part contains the update step for
-non-linear systems (see `CVODES documentation`_, eqs. (4.8) and (4.9)). Given
-a ``DERIVATIVE`` block of the form:
+step for non-stiff systems (functional iteration), while the second part
+contains the update step for stiff systems (additional step using the
+Jacobian).  For more information, see `CVODES documentation`_, eqs. (4.8) and
+(4.9). Given a ``DERIVATIVE`` block of the form:
 
 .. _CVODES documentation: https://sundials.readthedocs.io/en/latest/cvodes/Mathematics_link.html
 
diff --git a/src/pybind/wrapper.cpp b/src/pybind/wrapper.cpp
index ae9d41497..65fe2b6d6 100644
--- a/src/pybind/wrapper.cpp
+++ b/src/pybind/wrapper.cpp
@@ -186,8 +186,6 @@ except Exception as e:
     return {std::move(solution), std::move(exception_message)};
 }
 
-/// \brief A blunt instrument that differentiates expression w.r.t. variable
-/// \return The tuple (solution, exception)
 std::tuple<std::string, std::string> call_diff2c(
     const std::string& expression,
     const std::string& variable,
diff --git a/src/pybind/wrapper.hpp b/src/pybind/wrapper.hpp
index b4ec0a2df..694b0143d 100644
--- a/src/pybind/wrapper.hpp
+++ b/src/pybind/wrapper.hpp
@@ -45,6 +45,12 @@ std::tuple<std::string, std::string> call_analytic_diff(
     const std::vector<std::string>& expressions,
     const std::set<std::string>& used_names_in_block);
 
+
+/// \brief Differentiates an expression with respect to a variable
+/// \param expression The expression we want to differentiate
+/// \param variable   The name of the independent variable we are differentiating against
+/// \param index_vars A map of array (indexable) variables (and their associated indices) that
+/// appear in \ref expression \return The tuple (solution, exception)
 std::tuple<std::string, std::string> call_diff2c(
     const std::string& expression,
     const std::string& variable,