diff --git a/README.md b/README.md
index 13796c8..110447b 100644
--- a/README.md
+++ b/README.md
@@ -3208,7 +3208,7 @@ c  6  7
 |                        | 1  3   4   5  |            | 3   4   5  | right_on parameters.     |
 |                        | 2  .   6   7  |            |            | Uses 'inner' by default. |
 +------------------------+---------------+------------+------------+--------------------------+
-| l.join(r, lsuffix='l', |    x yl yr  z |            | x yl yr  z | Joins/merges on row_keys.|
+| l.join(r, lsuffix='l', |    x yl yr  z |            | x yl yr  z | Joins/merges on row keys.|
 |           rsuffix='r', | a  1  2  .  . | x yl yr  z | 1  2  .  . | Uses 'left' by default.  |
 |           how=…)       | b  3  4  4  5 | 3  4  4  5 | 3  4  4  5 |                          |
 |                        | c  .  .  6  7 |            |            |                          |
diff --git a/index.html b/index.html
index ded6f77..a96bc18 100644
--- a/index.html
+++ b/index.html
@@ -2728,7 +2728,7 @@ c  <span class="hljs-number">6</span>  <span class="hljs-number">7</span>
 ┃                        │ <span class="hljs-number">1</span>  <span class="hljs-number">3</span>   <span class="hljs-number">4</span>   <span class="hljs-number">5</span>  │            │ <span class="hljs-number">3</span>   <span class="hljs-number">4</span>   <span class="hljs-number">5</span>  │ right_on parameters.     ┃
 ┃                        │ <span class="hljs-number">2</span>  .   <span class="hljs-number">6</span>   <span class="hljs-number">7</span>  │            │            │ Uses <span class="hljs-string">'inner'</span> by default. ┃
 ┠────────────────────────┼───────────────┼────────────┼────────────┼──────────────────────────┨
-┃ l.join(r, lsuffix=<span class="hljs-string">'l'</span>, │    x yl yr  z │            │ x yl yr  z │ Joins/merges on row_keys.┃
+┃ l.join(r, lsuffix=<span class="hljs-string">'l'</span>, │    x yl yr  z │            │ x yl yr  z │ Joins/merges on row keys.┃
 ┃           rsuffix=<span class="hljs-string">'r'</span>, │ a  <span class="hljs-number">1</span>  <span class="hljs-number">2</span>  .  . │ x yl yr  z │ <span class="hljs-number">1</span>  <span class="hljs-number">2</span>  .  . │ Uses <span class="hljs-string">'left'</span> by default.  ┃
 ┃           how=…)       │ b  <span class="hljs-number">3</span>  <span class="hljs-number">4</span>  <span class="hljs-number">4</span>  <span class="hljs-number">5</span> │ <span class="hljs-number">3</span>  <span class="hljs-number">4</span>  <span class="hljs-number">4</span>  <span class="hljs-number">5</span> │ <span class="hljs-number">3</span>  <span class="hljs-number">4</span>  <span class="hljs-number">4</span>  <span class="hljs-number">5</span> │                          ┃
 ┃                        │ c  .  .  <span class="hljs-number">6</span>  <span class="hljs-number">7</span> │            │            │                          ┃
diff --git a/parse.js b/parse.js
index 907e9c5..f52213f 100755
--- a/parse.js
+++ b/parse.js
@@ -309,7 +309,7 @@ const DIAGRAM_15_B =
   "┃                        │ 1  3   4   5  │            │ 3   4   5  │ right_on parameters.     ┃\n" +
   "┃                        │ 2  .   6   7  │            │            │ Uses 'inner' by default. ┃\n" +
   "┠────────────────────────┼───────────────┼────────────┼────────────┼──────────────────────────┨\n" +
-  "┃ l.join(r, lsuffix='l', │    x yl yr  z │            │ x yl yr  z │ Joins/merges on row_keys.┃\n" +
+  "┃ l.join(r, lsuffix='l', │    x yl yr  z │            │ x yl yr  z │ Joins/merges on row keys.┃\n" +
   "┃           rsuffix='r', │ a  1  2  .  . │ x yl yr  z │ 1  2  .  . │ Uses 'left' by default.  ┃\n" +
   "┃           how=…)       │ b  3  4  4  5 │ 3  4  4  5 │ 3  4  4  5 │                          ┃\n" +
   "┃                        │ c  .  .  6  7 │            │            │                          ┃\n" +