diff --git a/book/_toc.yml b/book/_toc.yml
index b902279..9c6ce2f 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -21,6 +21,7 @@ parts:
       # - file: running/chemistry.ipynb
       # - file: running/ibm.ipynb
       # - file: running/openbcs.ipynb
+      - file: running/parallel.md
       - file: running/gpu.md
       - file: running/quirks.md
   - caption: For DALES developers
diff --git a/book/running/parallel.md b/book/running/parallel.md
index ab97757..7a68fd3 100644
--- a/book/running/parallel.md
+++ b/book/running/parallel.md
@@ -23,7 +23,7 @@ The best configuration (choice of `itot`, `jtot`, `nprocx`, `nprocy`) for a give
 
 * a reasonable number of grid rows and columns per task (`imax = itot/nprocx` and `jmax = jtot/nprocy`) is around 32-64.
   
-* the Fourier-transform-based Poisson solver works best (fastest) when the total grid sizes (`itot`, `jtot`) factorize into powers of small numbers, e.g. 2**n * 3**m.
+* the Fourier-transform-based Poisson solver works best (fastest) when the total grid sizes (`itot`, `jtot`) factorize into powers of small numbers, e.g. `2**n * 3**m`.
 
 * it seems square tiles are efficient, or tiles that are
 longer along x than y, perhaps up to two times longer.
@@ -37,9 +37,9 @@ the `total_number_of_cores = number_of_nodes * cores_per_node` should match the
 i.e. an integer number of tile rows fit on one node. This means that the
 communication in the x direction is always within a node.
 
-* often the number of cores in a node is of the form 2**n * 3**m, where
+* often the number of cores in a node is of the form `2**n * 3**m`, where
 m is small, e.g. 48, 128, 192.
-We have had good experiences with domain sizes (`itot`, `jtot`) that are 2**n or 3*2**n.
+We have had good experiences with domain sizes (`itot`, `jtot`) that are `2**n` or `3*2**n`.
 
 To increase speed and to save memory, also consider running in
-single-precision mode, see [](sec:compilation:single)=
+single-precision mode, see [](sec:compilation:single)