diff --git a/c/5.1.0.draft-release-notes.md b/c/5.1.0.draft-release-notes.md
index 1c57c9556..6db622b09 100644
--- a/c/5.1.0.draft-release-notes.md
+++ b/c/5.1.0.draft-release-notes.md
@@ -44,9 +44,8 @@ This resolves https://github.com/johnkerl/miller/issues/134.
 * There is a new [**feature-counting example**](http://johnkerl.org/miller-releases/miller-5.1.0/doc/cookbook.html#Feature-counting) in the cookbook.
 
 **Bugfixes:**
-* xxx join bug
-This resolves https://github.com/johnkerl/miller/issues/136.
+* **mlr join -j -l** was not functioning correctly. This resolves https://github.com/johnkerl/miller/issues/136.
 
-* xxx correct JSON escaping on output
-This resolves https://github.com/johnkerl/miller/issues/135.
+* **JSON escapes on output** (`\t` and so on) were incorrect. This resolves
+https://github.com/johnkerl/miller/issues/135.
 
diff --git a/doc/content-for-reference.html b/doc/content-for-reference.html
index f55b5acc0..1a7825e1c 100644
--- a/doc/content-for-reference.html
+++ b/doc/content-for-reference.html
@@ -323,6 +323,25 @@ assured you get the same results either way.
 have re-type formatting flags (e.g. <tt>--csv --fs tab</tt>) at every
 pipeline stage.
 
+<!-- ================================================================ -->
+</div>
+<h1>Auxiliary commands</h1>
+<button style="font-weight:bold;color:maroon;border:0" padding=0 onclick="toggle_by_name('section_toggle_auxents');" href="javascript:;">Toggle section visibility</button>
+<div id="section_toggle_auxents" style="display: block">
+
+<p/> There are a few nearly-standalone programs which have nothing to do with the rest of Miller, do not
+participate in record streams, and do not deal with file formats. They might as well be little standalone executables
+but they&rsquo;re delivered within the main Miller executable for convenience.
+
+POKI_RUN_COMMAND{{mlr aux-list}}HERE
+
+<p/> Examples:
+
+POKI_RUN_COMMAND{{echo 'Hello, world!' | mlr hex}}HERE
+POKI_RUN_COMMAND{{echo 'Hello, world!' | mlr hex -r}}HERE
+POKI_RUN_COMMAND{{echo 'Hello, world!' | mlr hex -r | mlr unhex}}HERE
+POKI_RUN_COMMAND{{echo 'Hello, world!' | mlr lecat --mono}}HERE
+
 <!-- ================================================================ -->
 </div>
 <h1>Data types</h1>
diff --git a/doc/reference.html b/doc/reference.html
index e50c771d9..f6fd0c7ac 100644
--- a/doc/reference.html
+++ b/doc/reference.html
@@ -197,6 +197,7 @@ Miller commands were run with pretty-print-tabular output format.
 &bull;&nbsp;<a href="#Data_transformations_(verbs)">Data transformations (verbs)</a><br/>
 &bull;&nbsp;<a href="#Expression_language_for_filter_and_put">Expression language for filter and put</a><br/>
 &bull;&nbsp;<a href="#then-chaining">then-chaining</a><br/>
+&bull;&nbsp;<a href="#Auxiliary_commands">Auxiliary commands</a><br/>
 &bull;&nbsp;<a href="#Data_types">Data types</a><br/>
 &bull;&nbsp;<a href="#Null_data:_empty_and_absent">Null data: empty and absent</a><br/>
 &bull;&nbsp;<a href="#String_literals">String literals</a><br/>
@@ -626,6 +627,67 @@ assured you get the same results either way.
 have re-type formatting flags (e.g. <tt>--csv --fs tab</tt>) at every
 pipeline stage.
 
+<!-- ================================================================ -->
+</div>
+<a id="Auxiliary_commands"/><h1>Auxiliary commands</h1>
+<button style="font-weight:bold;color:maroon;border:0" padding=0 onclick="toggle_by_name('section_toggle_auxents');" href="javascript:;">Toggle section visibility</button>
+<div id="section_toggle_auxents" style="display: block">
+
+<p/> There are a few nearly-standalone programs which have nothing to do with the rest of Miller, do not
+participate in record streams, and do not deal with file formats. They might as well be little standalone executables
+but they&rsquo;re delivered within the main Miller executable for convenience.
+
+<p/>
+<div class="pokipanel">
+<pre>
+$ mlr aux-list
+Available subcommands:
+  aux-list
+  lecat
+  termcvt
+  hex
+  unhex
+  netbsd-strptime
+For more information, please invoke mlr {subcommand} --help
+</pre>
+</div>
+<p/>
+
+<p/> Examples:
+
+<p/>
+<div class="pokipanel">
+<pre>
+$ echo 'Hello, world!' | mlr hex
+00000000: 48 65 6c 6c  6f 2c 20 77  6f 72 6c 64  21 0a       |Hello, world!.|
+</pre>
+</div>
+<p/>
+<p/>
+<div class="pokipanel">
+<pre>
+$ echo 'Hello, world!' | mlr hex -r
+48 65 6c 6c  6f 2c 20 77  6f 72 6c 64  21 0a
+</pre>
+</div>
+<p/>
+<p/>
+<div class="pokipanel">
+<pre>
+$ echo 'Hello, world!' | mlr hex -r | mlr unhex
+Hello, world!
+</pre>
+</div>
+<p/>
+<p/>
+<div class="pokipanel">
+<pre>
+$ echo 'Hello, world!' | mlr lecat --mono
+Hello, world![LF]
+</pre>
+</div>
+<p/>
+
 <!-- ================================================================ -->
 </div>
 <a id="Data_types"/><h1>Data types</h1>