diff --git a/chapters/mainmatter/base-features.tex b/chapters/mainmatter/base-features.tex
index 5b717a3..e84ed4d 100644
--- a/chapters/mainmatter/base-features.tex
+++ b/chapters/mainmatter/base-features.tex
@@ -223,6 +223,88 @@ \subsection{Math}
 If color is turned off, they are still hyperlinks.
 If even that is undesired, that can also be turned off in that package.
 
+\subsubsection{Predefined Macros}
+
+The \ctanpackage{physics} package has some
+\href{https://tex.stackexchange.com/q/471532/120853}{issues},
+and as such, this document relies on a couple custom macros in place of it, see
+\cref{tab:predefined_math_macros}.
+
+\begin{table}
+    \ttabbox{%
+        \caption[Predefined math macros]{%
+            Predefined math macros.
+            Refer to the source code for help on the syntax.
+            For derivatives, the starred macros yield partial derivatives%
+        }%
+        \label{tab:predefined_math_macros}
+    }{%
+        \renewcommand*{\arraystretch}{1.8}% For the fracs, increase spacing (local effect)
+        \small
+        \begin{tabular}{%
+            @{}
+            l
+            l
+            @{}
+        }
+            % floatrow cannot be used with \verb, or even \texttt and escaped special
+            % characters, see "Limitations" in floatrow docs.
+            % As a consequence, use normal names and refer the reader to the source
+            % code.
+            \toprule
+                Name & Examples \\
+            \midrule
+                Mean & \(\mean{\sym{density}}\), \(\mean{\sym{area}}\) \\
+                Logarithmic Mean & \(\logmean{\sym{density}}\), \(\logmean{\sym{area}}\) \\
+                Flow & \(\flow{\sym{mass}}\), \(\flow{\sym{enthalpy}}\) \\
+                Delta & \(\difference{\sym{volume}}\), \(\difference{\symspec{enthalpy}}\) \\
+                Nabla Operator &
+                    \(
+                        \nablaoperator{\sym{first_cart_coord}},
+                        \nablaoperator[3]{\sym{first_cart_coord}}
+                    \) \\
+                Vectors & \(\vect{\sym{first_cart_coord}}\), \(\vect{A}\) \\
+            \addlinespace
+                Derivatives &
+                    \(
+                        \deriv{\sym{mass}},
+                        \deriv[2]{\sym{first_cart_coord}},
+                        \deriv*{\sym{mass}},
+                        \deriv*[2]{\sym{first_cart_coord}}
+                    \) \\
+                Fractional Deriv. &
+                    \(
+                        \fracderiv{\sym{voltage}}{\sym{time}},
+                        \fracderiv[2]{\sym{second_cart_coord}}{\sym{first_cart_coord}},
+                        \fracderiv*{\sym{voltage}}{\sym{time}},
+                        \fracderiv*[2]{\sym{second_cart_coord}}{\sym{first_cart_coord}},
+                        \fracderiv{\symspec{enthalpy}}{\sym{abs_temperature}},
+                        \fracderiv[2]{\symspec{enthalpy}}{\sym{abs_temperature}},
+                        \fracderiv*{\symspec{enthalpy}}{\sym{abs_temperature}},
+                        \fracderiv*[2]{\symspec{enthalpy}}{\sym{abs_temperature}}
+                    \) \\
+                Time Deriv.\mpfootnotemark[1] &
+                    \(
+                        \timederiv{\sym{voltage}},
+                        \timederiv[2]{\sym{second_cart_coord}},
+                        \timederiv*{\sym{voltage}},
+                        \timederiv*[2]{\sym{first_cart_coord}}
+                    \) \\
+                Positional Deriv.\mpfootnotemark[1] &
+                    \(
+                        \posderiv{\sym{volume}},
+                        \posderiv[2]{\sym{velocity}},
+                        \posderiv*{\sym{volume}},
+                        \posderiv*[2]{\sym{velocity}}
+                    \) \\
+            \bottomrule
+        \end{tabular}
+        \footnotetext[1]{%
+            As a shortcut version of fractional derivatives.%
+        }%
+    }
+\end{table}
+
 \subsubsection{Symbols}
 
 Note how the symbols in equations are hyperlinks