diff --git a/bash.md b/bash.md
index c66cf893f..7a7e16f19 100644
--- a/bash.md
+++ b/bash.md
@@ -192,12 +192,16 @@ comment
 
 ### Substrings
 
-| `${FOO:0:3}`  | Substring _(position, length)_ |
-| `${FOO:(-3):3}` | Substring from the right |
+| Expression      | Description                    |
+| --------------- | ------------------------------ |
+| `${FOO:0:3}`    | Substring _(position, length)_ |
+| `${FOO:(-3):3}` | Substring from the right       |
 
 ### Length
 
-| `${#FOO}` | Length of `$FOO` |
+| Expression | Description      |
+| ---------- | ---------------- |
+| `${#FOO}`  | Length of `$FOO` |
 
 ### Manipulation