diff --git a/_config.yml b/_config.yml
index 1ea8140..e680c1e 100644
--- a/_config.yml
+++ b/_config.yml
@@ -87,6 +87,11 @@ plugins:
   - jekyll-include-cache
   - jekyll-jupyter-notebook
 
+# TODO(template):
+katex: true
+katex_macros:
+  # put macros here..
+
 # Default layouts for each collection type
 defaults:
   - scope:
@@ -190,6 +195,7 @@ compress_html:
   profile: false
 
 kramdown:
+  gfm_emojis: true
   math_engine: katex
   math_engine_opts:
   syntax_highlighter: rouge
diff --git a/_includes/katex.html b/_includes/katex.html
new file mode 100644
index 0000000..b4da271
--- /dev/null
+++ b/_includes/katex.html
@@ -0,0 +1,27 @@
+<!-- TODO: Move to local files... -->
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.11/dist/katex.min.css" integrity="sha384-nB0miv6/jRmo5UMMR1wu3Gz6NLsoTkbqJghGIsx//Rlm+ZU03BU6SQNC66uf4l5+" crossorigin="anonymous">
+<script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.11/dist/katex.min.js" integrity="sha384-7zkQWkzuo3B5mTepMUcHkMB5jZaolc2xDwL6VFqjFALcbeS9Ggm/Yr2r3Dy4lfFg" crossorigin="anonymous"></script>
+<script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.11/dist/contrib/auto-render.min.js" integrity="sha384-43gviWU0YVjaDtb/GhzOouOXtZMP/7XUzwPTstBeZFe/+rCMvRwr4yROQP43s0Xk" crossorigin="anonymous"></script>
+
+<!-- Investigate adding copy-tex -->
+<script>
+  document.addEventListener("DOMContentLoaded", function() {
+      renderMathInElement(document.body, {
+        // customised options
+        // • auto-render specific keys, e.g.:
+        delimiters: [
+            {left: '$$$', right: '$$$', display: true},
+            {left: '$$', right: '$$', display: false},
+            {left: "\\begin{equation}", right: "\\end{equation}", display: true},
+            {left: "\\begin{align}", right: "\\end{align}", display: true},
+            {left: "\\begin{alignat}", right: "\\end{alignat}", display: true},
+            {left: "\\begin{gather}", right: "\\end{gather}", display: true},
+            {left: "\\begin{CD}", right: "\\end{CD}", display: true},
+        ],
+        // • rendering keys, e.g.:
+        throwOnError : false,
+        // Marcos:https://katex.org/docs/supported#gdef
+        marcos: {}
+      });
+  });
+</script>