diff --git a/control/bdalg.py b/control/bdalg.py
index f6d89f7be..d1baaa410 100644
--- a/control/bdalg.py
+++ b/control/bdalg.py
@@ -62,7 +62,9 @@
 
 
 def series(sys1, *sysn):
-    """Return the series connection (sysn \\* ... \\*) sys2 \\* sys1
+    r"""series(sys1, sys2, [..., sysn])
+
+    Return the series connection (`sysn` \* ...\  \*) `sys2` \* `sys1`.
 
     Parameters
     ----------
@@ -107,8 +109,9 @@ def series(sys1, *sysn):
 
 
 def parallel(sys1, *sysn):
-    """
-    Return the parallel connection sys1 + sys2 (+ ... + sysn)
+    r"""parallel(sys1, sys2, [..., sysn])
+
+    Return the parallel connection `sys1` + `sys2` (+ ...\  + `sysn`).
 
     Parameters
     ----------
@@ -252,9 +255,9 @@ def feedback(sys1, sys2=1, sign=-1):
     return sys1.feedback(sys2, sign)
 
 def append(*sys):
-    """append(sys1, sys2, ..., sysn)
+    """append(sys1, sys2, [..., sysn])
 
-    Group models by appending their inputs and outputs
+    Group models by appending their inputs and outputs.
 
     Forms an augmented system model, and appends the inputs and
     outputs together. The system type will be the type of the first
diff --git a/doc/control.rst b/doc/control.rst
index a3e28881b..0dc62f0ee 100644
--- a/doc/control.rst
+++ b/doc/control.rst
@@ -71,16 +71,6 @@ Time domain simulation
     step_response
     phase_plot
 
-Block diagram algebra
-=====================
-.. autosummary::
-   :toctree: generated/
-
-    series
-    parallel
-    feedback
-    negate
-
 Control system analysis
 =======================
 .. autosummary::