diff --git a/latest/index.html b/latest/index.html
index 7495c83..5f0e3b2 100644
--- a/latest/index.html
+++ b/latest/index.html
@@ -1,7 +1,9 @@
 <!DOCTYPE html>
-<html lang="en"><head><meta charset="UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><title>Home · BibTeX.jl</title><link href="https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css" rel="stylesheet" type="text/css"/><link href="https://fonts.googleapis.com/css?family=Lato|Roboto+Mono" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css" rel="stylesheet" type="text/css"/><script>documenterBaseURL="."</script><script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.2.0/require.min.js" data-main="assets/documenter.js"></script><script src="siteinfo.js"></script><script src="../versions.js"></script><link href="assets/documenter.css" rel="stylesheet" type="text/css"/></head><body><nav class="toc"><h1>BibTeX.jl</h1><select id="version-selector" onChange="window.location.href=this.value" style="visibility: hidden"></select><form class="search" action="search.html"><input id="search-query" name="q" type="text" placeholder="Search docs"/></form><ul><li class="current"><a class="toctext" href="index.html">Home</a><ul class="internal"></ul></li></ul></nav><article id="docs"><header><nav><ul><li><a href="index.html">Home</a></li></ul><a class="edit-page" href="https://github.com/bramtayl/BibTeX.jl/tree/19b3a8804ef96c6c143d2cbb25e14750061d01b5/docs/src/index.md"><span class="fa"></span> Edit on GitHub</a></nav><hr/><div id="topbar"><span>Home</span><a class="fa fa-bars" href="#"></a></div></header><h1><a class="nav-anchor" id="BibTeX.jl-1" href="#BibTeX.jl-1">BibTeX.jl</a></h1><ul><li><a href="index.html#BibTeX.parse_bibtex-Tuple{Any}"><code>BibTeX.parse_bibtex</code></a></li></ul><section class="docstring"><div class="docstring-header"><a class="docstring-binding" id="BibTeX.parse_bibtex-Tuple{Any}" href="#BibTeX.parse_bibtex-Tuple{Any}"><code>BibTeX.parse_bibtex</code></a> — <span class="docstring-category">Method</span>.</div><div><pre><code class="language-none">parse_bibtex(text)</code></pre><p>This is a simple input parser for BibTex. I had trouble finding a standard specification, but I&#39;ve included several features of real BibTex.</p><pre><code class="language-julia-repl">julia&gt; using BibTeX
+<html lang="en"><head><meta charset="UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><title>Home · BibTeX.jl</title><link href="https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css" rel="stylesheet" type="text/css"/><link href="https://fonts.googleapis.com/css?family=Lato|Roboto+Mono" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css" rel="stylesheet" type="text/css"/><script>documenterBaseURL="."</script><script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.2.0/require.min.js" data-main="assets/documenter.js"></script><script src="siteinfo.js"></script><script src="../versions.js"></script><link href="assets/documenter.css" rel="stylesheet" type="text/css"/></head><body><nav class="toc"><h1>BibTeX.jl</h1><select id="version-selector" onChange="window.location.href=this.value" style="visibility: hidden"></select><form class="search" action="search.html"><input id="search-query" name="q" type="text" placeholder="Search docs"/></form><ul><li class="current"><a class="toctext" href="index.html">Home</a><ul class="internal"></ul></li></ul></nav><article id="docs"><header><nav><ul><li><a href="index.html">Home</a></li></ul><a class="edit-page" href="https://github.com/bramtayl/BibTeX.jl/tree/352997ae86f3b5e26cbae838eac049f3cf7e79b2/docs/src/index.md"><span class="fa"></span> Edit on GitHub</a></nav><hr/><div id="topbar"><span>Home</span><a class="fa fa-bars" href="#"></a></div></header><h1><a class="nav-anchor" id="BibTeX.jl-1" href="#BibTeX.jl-1">BibTeX.jl</a></h1><ul><li><a href="index.html#BibTeX.parse_bibtex-Tuple{Any}"><code>BibTeX.parse_bibtex</code></a></li></ul><section class="docstring"><div class="docstring-header"><a class="docstring-binding" id="BibTeX.parse_bibtex-Tuple{Any}" href="#BibTeX.parse_bibtex-Tuple{Any}"><code>BibTeX.parse_bibtex</code></a> — <span class="docstring-category">Method</span>.</div><div><pre><code class="language-none">parse_bibtex(text)</code></pre><p>This is a simple input parser for BibTex. I had trouble finding a standard specification, but I&#39;ve included several features of real BibTex. Returns a preamble (or an empty string) and a dict of dicts.</p><pre><code class="language-julia-repl">julia&gt; using BibTeX
 
-julia&gt; result = parse_bibtex(&quot;&quot;&quot;
+julia&gt; preamble, result = parse_bibtex(&quot;&quot;&quot;
+            @preamble{some instructions}
+            @comment blah blah
             @string{short = long}
             @a{b,
               c = { {c} c},
@@ -10,6 +12,9 @@ julia&gt; result = parse_bibtex(&quot;&quot;&quot;
             }
             &quot;&quot;&quot;);
 
+julia&gt; preamble
+&quot;some instructions&quot;
+
 julia&gt; result[&quot;b&quot;][&quot;type&quot;]
 &quot;a&quot;
 
@@ -28,4 +33,4 @@ ERROR: Expected { on line 1
 
 julia&gt; parse_bibtex(&quot;@book@&quot;)
 ERROR: Expected { on line 1
-[...]</code></pre></div><a class="source-link" target="_blank" href="https://github.com/bramtayl/BibTeX.jl/tree/19b3a8804ef96c6c143d2cbb25e14750061d01b5/src/BibTeX.jl#L101-L139">source</a><br/></section><footer><hr/></footer></article></body></html>
+[...]</code></pre></div><a class="source-link" target="_blank" href="https://github.com/bramtayl/BibTeX.jl/tree/352997ae86f3b5e26cbae838eac049f3cf7e79b2/src/BibTeX.jl#L101-L145">source</a><br/></section><footer><hr/></footer></article></body></html>
diff --git a/latest/search_index.js b/latest/search_index.js
index aef149a..109bdac 100644
--- a/latest/search_index.js
+++ b/latest/search_index.js
@@ -13,7 +13,7 @@ var documenterSearchIndex = {"docs": [
     "page": "Home",
     "title": "BibTeX.parse_bibtex",
     "category": "Method",
-    "text": "parse_bibtex(text)\n\nThis is a simple input parser for BibTex. I had trouble finding a standard specification, but I've included several features of real BibTex.\n\njulia> using BibTeX\n\njulia> result = parse_bibtex(\"\"\"\n            @string{short = long}\n            @a{b,\n              c = { {c} c},\n              d = \"d d\",\n              e = f # short\n            }\n            \"\"\");\n\njulia> result[\"b\"][\"type\"]\n\"a\"\n\njulia> result[\"b\"][\"c\"]\n\"{ c } c\"\n\njulia> result[\"b\"][\"d\"]\n\"d d\"\n\njulia> result[\"b\"][\"e\"]\n\"f short\"\n\njulia> parse_bibtex(\"@book\")\nERROR: Expected { on line 1\n[...]\n\njulia> parse_bibtex(\"@book@\")\nERROR: Expected { on line 1\n[...]\n\n\n\n"
+    "text": "parse_bibtex(text)\n\nThis is a simple input parser for BibTex. I had trouble finding a standard specification, but I've included several features of real BibTex. Returns a preamble (or an empty string) and a dict of dicts.\n\njulia> using BibTeX\n\njulia> preamble, result = parse_bibtex(\"\"\"\n            @preamble{some instructions}\n            @comment blah blah\n            @string{short = long}\n            @a{b,\n              c = { {c} c},\n              d = \"d d\",\n              e = f # short\n            }\n            \"\"\");\n\njulia> preamble\n\"some instructions\"\n\njulia> result[\"b\"][\"type\"]\n\"a\"\n\njulia> result[\"b\"][\"c\"]\n\"{ c } c\"\n\njulia> result[\"b\"][\"d\"]\n\"d d\"\n\njulia> result[\"b\"][\"e\"]\n\"f short\"\n\njulia> parse_bibtex(\"@book\")\nERROR: Expected { on line 1\n[...]\n\njulia> parse_bibtex(\"@book@\")\nERROR: Expected { on line 1\n[...]\n\n\n\n"
 },
 
 {
