diff --git a/README.md b/README.md
index 4a2c2c3..b516288 100644
--- a/README.md
+++ b/README.md
@@ -225,10 +225,10 @@ key combination.
 - `<CTRL-/>` (or `<CTRL-X>` on GVim)
   - `[:;]\+`
 
-#### Options in shortcut expression
+#### Options in shorthand notation
 
 When you use regular expression in command line, options dictionary can be
-written concisely using shortcut expression.
+written concisely using shorthand notation.
 
 For example, the command we saw in the previous section,
 
@@ -238,7 +238,7 @@ can also be written as
 
 - `:EasyAlign*/[:;]\+/s1l0`
 
-Supported shortcut expressions are listed below.
+Supported shorthand notations are listed below.
 
 | Expression | Option           |
 | ---------- | ---------------- |
@@ -250,6 +250,10 @@ Supported shortcut expressions are listed below.
 | `m[lrc*]*` | mode_sequence    |
 | `i[ksdn]`  | indentation      |
 
+Notice that some option values cannot be expressed in shorthand notation.
+
+- `:EasyAlign*/[:;]\+/s1l0 {'ig': []}`
+
 ### Partial alignment in blockwise-visual mode
 
 In blockwise-visual mode (`CTRL-V`), EasyAlign command aligns only the selected
diff --git a/doc/easy_align.txt b/doc/easy_align.txt
index 7bbe4bc..cb9476c 100644
--- a/doc/easy_align.txt
+++ b/doc/easy_align.txt
@@ -119,16 +119,16 @@ For example, when aligning the following lines around colons and semi-colons,
 
 try these commands:
 
-- :EasyAlign /[:;]\+/
-- :EasyAlign 2/[:;]\+/
-- :EasyAlign */[:;]\+/
-- :EasyAlign **/[:;]\+/
+    :EasyAlign /[:;]\+/
+    :EasyAlign 2/[:;]\+/
+    :EasyAlign */[:;]\+/
+    :EasyAlign **/[:;]\+/
 
 Notice that you can't append '\zs' to your regular expression to put delimiters
 on the left. It can be done by providing additional options in Vim dictionary
 format.
 
-- :EasyAlign * /[:;]\+/ { 'stick_to_left': 1, 'left_margin': 0 }
+    :EasyAlign * /[:;]\+/ { 'stick_to_left': 1, 'left_margin': 0 }
 
 Then we get:
 
@@ -137,33 +137,33 @@ Then we get:
 
 Option names are fuzzy-matched, so you can write as follows:
 
-- :EasyAlign * /[:;]\+/ { 'stl': 1, 'l': '' }
+    :EasyAlign * /[:;]\+/ { 'stl': 1, 'l': '' }
 
 You can even omit spaces between the arguments, so concisely (or cryptically):
 
-- :EasyAlign*/[:;]\+/{'s':1,'l':''}
+    :EasyAlign*/[:;]\+/{'s':1,'l':''}
 
 The same thing can be done in the interactive mode as well with the following
 key combination.
 
-- <Enter>
-- *
-- <Left>
-- <CTRL-/> (or <CTRL-X> on GVim)
-  - [:;]\+
+    - <Enter>
+    - *
+    - <Left>
+    - <CTRL-/> (or <CTRL-X> on GVim)
+      - [:;]\+
 
 When you use regular expression in command line, options dictionary can be
-written concisely using shortcut expression.
+written concisely using shorthand notation.
 
 For example, the command we saw in the previous section,
 
-- :EasyAlign*/[:;]\+/{'s':1,'l':0}
+    :EasyAlign*/[:;]\+/{'s':1,'l':0}
 
 can also be written as
 
-- :EasyAlign*/[:;]\+/s1l0
+    :EasyAlign*/[:;]\+/s1l0
 
-Supported shortcut expressions are listed below.
+Supported shorthand notations are listed below.
 
 | Expression | Option           |
 | ---------- | --------------   |
@@ -172,9 +172,13 @@ Supported shortcut expressions are listed below.
 | s[01]      | stick_to_left    |
 | u[01]      | ignore_unmatched |
 | d[lrc]     | delimiter_align  |
-| m[lrc*]*   | mode_sequence    |
+| m[lrc*]+   | mode_sequence    |
 | i[ksdn]    | indentation      |
 
+Notice that some option values cannot be expressed in shorthand notation.
+
+    :EasyAlign*/[:;]\+/s1l0 {'ig': []}
+
 
 Partial alignment in blockwise-visual mode
 -------------------------------------------------------------------------