diff --git a/docs/awesome_table_in_html.Rmd b/docs/awesome_table_in_html.Rmd
index 1d2e263..1161d28 100644
--- a/docs/awesome_table_in_html.Rmd
+++ b/docs/awesome_table_in_html.Rmd
@@ -205,8 +205,8 @@
 ```{r}
 sometext <- strsplit(paste0(
   "You can even try to make some crazy things like this paragraph. ", 
-  "It seems to be a useless feature at this moment but it's so cool ",
-  "that nobody can resist. ;)"
+  "It may seem like a useless feature right now but it's so cool ",
+  "and nobody can resist. ;)"
 ), " ")[[1]]
 text_formatted <- paste(
   text_spec(sometext, "html", color = spec_color(1:length(sometext), end = 0.9),
diff --git a/docs/awesome_table_in_html.html b/docs/awesome_table_in_html.html
index 012ccdd..ed3574f 100644
--- a/docs/awesome_table_in_html.html
+++ b/docs/awesome_table_in_html.html
@@ -2310,8 +2310,8 @@
 <p>An aliased function <code>text_spec</code> is also provided for a more literal writing experience. In HTML, there is no difference between these two functions.</p>
 <pre class="r"><code>sometext &lt;- strsplit(paste0(
   &quot;You can even try to make some crazy things like this paragraph. &quot;, 
-  &quot;It seems to be a useless feature at this moment but it's so cool &quot;,
-  &quot;that nobody can resist. ;)&quot;
+  &quot;It may seem like a useless feature right now but it's so cool &quot;,
+  &quot;and nobody can resist. ;)&quot;
 ), &quot; &quot;)[[1]]
 text_formatted &lt;- paste(
   text_spec(sometext, &quot;html&quot;, color = spec_color(1:length(sometext), end = 0.9),
@@ -2319,7 +2319,7 @@
   collapse = &quot; &quot;)
 
 # To display the text, type `r text_formatted` outside of the chunk</code></pre>
-<p><span style="color: rgba(68, 1, 84, 1);font-size: 5px;">You</span> <span style="color: rgba(71, 13, 96, 1);font-size: 6px;">can</span> <span style="color: rgba(72, 23, 105, 1);font-size: 6px;">even</span> <span style="color: rgba(72, 32, 114, 1);font-size: 6px;">try</span> <span style="color: rgba(71, 43, 122, 1);font-size: 7px;">to</span> <span style="color: rgba(69, 53, 129, 1);font-size: 8px;">make</span> <span style="color: rgba(67, 62, 133, 1);font-size: 8px;">some</span> <span style="color: rgba(64, 70, 136, 1);font-size: 8px;">crazy</span> <span style="color: rgba(60, 79, 138, 1);font-size: 9px;">things</span> <span style="color: rgba(56, 88, 140, 1);font-size: 10px;">like</span> <span style="color: rgba(53, 96, 141, 1);font-size: 10px;">this</span> <span style="color: rgba(49, 103, 142, 1);font-size: 10px;">paragraph.</span> <span style="color: rgba(46, 111, 142, 1);font-size: 11px;">It</span> <span style="color: rgba(42, 118, 142, 1);font-size: 12px;">seems</span> <span style="color: rgba(40, 125, 142, 1);font-size: 12px;">to</span> <span style="color: rgba(37, 131, 142, 1);font-size: 12px;">be</span> <span style="color: rgba(34, 139, 141, 1);font-size: 13px;">a</span> <span style="color: rgba(32, 146, 140, 1);font-size: 14px;">useless</span> <span style="color: rgba(31, 154, 138, 1);font-size: 14px;">feature</span> <span style="color: rgba(31, 161, 136, 1);font-size: 14px;">at</span> <span style="color: rgba(34, 168, 132, 1);font-size: 15px;">this</span> <span style="color: rgba(41, 175, 127, 1);font-size: 16px;">moment</span> <span style="color: rgba(51, 182, 122, 1);font-size: 16px;">but</span> <span style="color: rgba(62, 188, 115, 1);font-size: 16px;">it’s</span> <span style="color: rgba(77, 195, 107, 1);font-size: 17px;">so</span> <span style="color: rgba(93, 201, 98, 1);font-size: 18px;">cool</span> <span style="color: rgba(110, 206, 88, 1);font-size: 18px;">that</span> <span style="color: rgba(127, 211, 78, 1);font-size: 18px;">nobody</span> <span style="color: rgba(147, 215, 65, 1);font-size: 19px;">can</span> <span style="color: rgba(169, 219, 51, 1);font-size: 20px;">resist.</span> <span style="color: rgba(187, 223, 39, 1);font-size: 20px;">;)</span></p>
+<p><span style="color: rgba(68, 1, 84, 1);font-size: 5px;">You</span> <span style="color: rgba(71, 13, 96, 1);font-size: 6px;">can</span> <span style="color: rgba(72, 24, 106, 1);font-size: 6px;">even</span> <span style="color: rgba(72, 34, 116, 1);font-size: 7px;">try</span> <span style="color: rgba(71, 45, 122, 1);font-size: 7px;">to</span> <span style="color: rgba(69, 54, 129, 1);font-size: 8px;">make</span> <span style="color: rgba(66, 64, 134, 1);font-size: 8px;">some</span> <span style="color: rgba(62, 73, 137, 1);font-size: 9px;">crazy</span> <span style="color: rgba(59, 81, 139, 1);font-size: 9px;">things</span> <span style="color: rgba(55, 90, 140, 1);font-size: 10px;">like</span> <span style="color: rgba(51, 98, 141, 1);font-size: 10px;">this</span> <span style="color: rgba(48, 106, 142, 1);font-size: 11px;">paragraph.</span> <span style="color: rgba(44, 113, 142, 1);font-size: 11px;">It</span> <span style="color: rgba(41, 121, 142, 1);font-size: 12px;">may</span> <span style="color: rgba(38, 129, 142, 1);font-size: 12px;">seem</span> <span style="color: rgba(35, 136, 142, 1);font-size: 13px;">like</span> <span style="color: rgba(33, 144, 141, 1);font-size: 13px;">a</span> <span style="color: rgba(31, 150, 139, 1);font-size: 14px;">useless</span> <span style="color: rgba(31, 158, 137, 1);font-size: 14px;">feature</span> <span style="color: rgba(33, 165, 133, 1);font-size: 15px;">right</span> <span style="color: rgba(38, 173, 129, 1);font-size: 15px;">now</span> <span style="color: rgba(48, 180, 124, 1);font-size: 16px;">but</span> <span style="color: rgba(59, 187, 117, 1);font-size: 16px;">it’s</span> <span style="color: rgba(74, 193, 109, 1);font-size: 17px;">so</span> <span style="color: rgba(90, 200, 100, 1);font-size: 17px;">cool</span> <span style="color: rgba(108, 205, 90, 1);font-size: 18px;">and</span> <span style="color: rgba(127, 211, 78, 1);font-size: 18px;">nobody</span> <span style="color: rgba(145, 215, 66, 1);font-size: 19px;">can</span> <span style="color: rgba(166, 219, 53, 1);font-size: 19px;">resist.</span> <span style="color: rgba(187, 223, 39, 1);font-size: 20px;">;)</span></p>
 </div>
 <div id="tooltip" class="section level2">
 <h2>Tooltip</h2>
@@ -3541,7 +3541,7 @@
 1
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 <tr>
@@ -3549,7 +3549,7 @@
 2
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 <tr>
@@ -3557,7 +3557,7 @@
 3
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
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@@ -3565,7 +3565,7 @@
 4
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
 <tr>
@@ -3573,7 +3573,7 @@
 5
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 <tr>
@@ -3581,7 +3581,7 @@
 6
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 <tr>
@@ -3600,7 +3600,7 @@
 8
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
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@@ -3616,7 +3616,7 @@
 10
 </td>
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-0
+1
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@@ -3630,7 +3630,7 @@
 11
 </td>
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-1
+0
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@@ -3649,7 +3649,7 @@
 13
 </td>
 <td style="text-align:center;">
-0
+1
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@@ -3657,7 +3657,7 @@
 14
 </td>
 <td style="text-align:center;">
-1
+0
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 </tr>
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diff --git a/docs/awesome_table_in_pdf.Rmd b/docs/awesome_table_in_pdf.Rmd
index 2eb2a1e..ff8e7dd 100644
--- a/docs/awesome_table_in_pdf.Rmd
+++ b/docs/awesome_table_in_pdf.Rmd
@@ -24,6 +24,8 @@
   %\VignetteEncoding{UTF-8}
 ---
 
+\clearpage
+
 > Please see the package [documentation site](http://haozhu233.github.io/kableExtra) for how to use this package in HTML and more.  
 
 # Overview
@@ -85,7 +87,9 @@
 ## Plain LaTeX
 Plain LaTeX table looks relatively ugly in 2017.
 ```{r}
-kable(dt)
+# As I said, you don't need format = "latex" if you have defined 
+# knitr.table.format in options.
+kable(dt, format = "latex")
 ```
 
 ## LaTeX table with booktabs
@@ -258,8 +262,8 @@
 ```{r}
 sometext <- strsplit(paste0(
   "You can even try to make some crazy things like this paragraph. ", 
-  "It seems to be a useless feature at this moment but it's so cool ",
-  "that nobody can resist. ;)"
+  "It may seem like a useless feature right now but it's so cool ",
+  "and nobody can resist. ;)"
 ), " ")[[1]]
 text_formatted <- paste(
   text_spec(sometext, "latex", color = spec_color(1:length(sometext), end = 0.9),
diff --git a/docs/awesome_table_in_pdf.pdf b/docs/awesome_table_in_pdf.pdf
index eedd17f..fff4882 100644
--- a/docs/awesome_table_in_pdf.pdf
+++ b/docs/awesome_table_in_pdf.pdf
Binary files differ
diff --git a/vignettes/awesome_table_in_html.Rmd b/vignettes/awesome_table_in_html.Rmd
index 1d2e263..1161d28 100644
--- a/vignettes/awesome_table_in_html.Rmd
+++ b/vignettes/awesome_table_in_html.Rmd
@@ -205,8 +205,8 @@
 ```{r}
 sometext <- strsplit(paste0(
   "You can even try to make some crazy things like this paragraph. ", 
-  "It seems to be a useless feature at this moment but it's so cool ",
-  "that nobody can resist. ;)"
+  "It may seem like a useless feature right now but it's so cool ",
+  "and nobody can resist. ;)"
 ), " ")[[1]]
 text_formatted <- paste(
   text_spec(sometext, "html", color = spec_color(1:length(sometext), end = 0.9),
diff --git a/vignettes/awesome_table_in_pdf.Rmd b/vignettes/awesome_table_in_pdf.Rmd
index 2eb2a1e..ff8e7dd 100644
--- a/vignettes/awesome_table_in_pdf.Rmd
+++ b/vignettes/awesome_table_in_pdf.Rmd
@@ -24,6 +24,8 @@
   %\VignetteEncoding{UTF-8}
 ---
 
+\clearpage
+
 > Please see the package [documentation site](http://haozhu233.github.io/kableExtra) for how to use this package in HTML and more.  
 
 # Overview
@@ -85,7 +87,9 @@
 ## Plain LaTeX
 Plain LaTeX table looks relatively ugly in 2017.
 ```{r}
-kable(dt)
+# As I said, you don't need format = "latex" if you have defined 
+# knitr.table.format in options.
+kable(dt, format = "latex")
 ```
 
 ## LaTeX table with booktabs
@@ -258,8 +262,8 @@
 ```{r}
 sometext <- strsplit(paste0(
   "You can even try to make some crazy things like this paragraph. ", 
-  "It seems to be a useless feature at this moment but it's so cool ",
-  "that nobody can resist. ;)"
+  "It may seem like a useless feature right now but it's so cool ",
+  "and nobody can resist. ;)"
 ), " ")[[1]]
 text_formatted <- paste(
   text_spec(sometext, "latex", color = spec_color(1:length(sometext), end = 0.9),