diff --git a/autotest/autotest.py b/autotest/autotest.py
new file mode 100755
index 00000000..27129efd
--- /dev/null
+++ b/autotest/autotest.py
@@ -0,0 +1,104 @@
+#!/usr/bin/env python
+
+import re
+
+def print_snippet(snippet):
+    print(78*'-')
+    print(snippet)
+    print(78*'-')
+
+class Snippet(object):
+
+    def __init__(self, slide, content):
+        self.slide = slide
+        self.content = content
+
+    def __str__(self):
+        return self.content
+
+
+class Slide(object):
+
+    current_slide = 0
+
+    def __init__(self, content):
+        Slide.current_slide += 1
+        self.number = Slide.current_slide
+        # Remove commented-out slides
+        # (remark.js considers ??? to be the separator for speaker notes)
+        content = re.split("\n\?\?\?\n", content)[0]
+        self.content = content
+        self.snippets = []
+        exercises = re.findall("\.exercise\[(.*)\]", content, re.DOTALL)
+        for exercise in exercises:
+            if "```" in exercise and "<br/>`" in exercise:
+                print("! Exercise on slide {} has both ``` and <br/>` delimiters, skipping."
+                      .format(self.number))
+                print_snippet(exercise)
+            elif "```" in exercise:
+                for snippet in exercise.split("```")[1::2]:
+                    self.snippets.append(Snippet(self, snippet))
+            elif "<br/>`" in exercise:
+                for snippet in re.findall("<br/>`(.*)`", exercise):
+                    self.snippets.append(Snippet(self, snippet))
+            else:
+                print("  Exercise on slide {} has neither ``` or <br/>` delimiters, skipping."
+                     .format(self.number))
+
+    def __str__(self):
+        text = self.content
+        for snippet in self.snippets:
+            text = text.replace(snippet.content, "\x1b[7m{}\x1b[0m".format(snippet.content))
+        return text
+
+
+slides = []
+with open("index.html") as f:
+    content = f.read()
+    for slide in re.split("\n---?\n", content):
+        slides.append(Slide(slide))
+
+is_editing_file = False
+placeholders = {}
+for slide in slides:
+    for snippet in slide.snippets:
+        content = snippet.content
+        # Multi-line snippets should be ```highlightsyntax...
+        # Single-line snippets will be interpreted as shell commands
+        if '\n' in content:
+            highlight, content = content.split('\n', 1)
+        else:
+            highlight = "bash"
+        content = content.strip()
+        # If the previous snippet was a file fragment, and the current
+        # snippet is not YAML or EDIT, complain.
+        if is_editing_file and highlight not in ["yaml", "edit"]:
+            print("! On slide {}, previous snippet was YAML, so what do what do?"
+                  .format(slide.number))
+            print_snippet(content)
+        is_editing_file = False
+        if highlight == "yaml":
+            is_editing_file = True
+        elif highlight == "placeholder":
+            for line in content.split('\n'):
+                variable, value = line.split(' ', 1)
+                placeholders[variable] = value
+        elif highlight == "bash":
+            for variable, value in placeholders.items():
+                quoted = "`{}`".format(variable)
+                if quoted in content:
+                    content = content.replace(quoted, value)
+                    del placeholders[variable]
+            if '`' in content:
+                print("! The following snippet on slide {} contains a backtick:"
+                      .format(slide.number))
+                print_snippet(content)
+                continue
+            print("_ "+content)
+        elif highlight == "edit":
+            print(". "+content)
+        elif highlight == "meta":
+            print("^ "+content)
+        else:
+            print("! Unknown highlight {!r} on slide {}.".format(highlight, slide.number))
+
diff --git a/autotest/index.html b/autotest/index.html
new file mode 120000
index 00000000..f8d31667
--- /dev/null
+++ b/autotest/index.html
@@ -0,0 +1 @@
+../www/htdocs/index.html
\ No newline at end of file