diff --git a/src/uu/expr/expr.md b/src/uu/expr/expr.md
index 1faa88781..6c881eb35 100644
--- a/src/uu/expr/expr.md
+++ b/src/uu/expr/expr.md
@@ -2,7 +2,7 @@
 
 ## About
 
-Print the value of EXPRESSION to standard output
+Print the value of `EXPRESSION` to standard output
 
 ## Usage
 ```
@@ -12,48 +12,50 @@ expr [OPTIONS]
 
 ## After help
 
-Print the value of EXPRESSION to standard output.  A blank line below
-separates increasing precedence groups.  EXPRESSION may be:
+Print the value of `EXPRESSION` to standard output.  A blank line below
+separates increasing precedence groups. 
 
-  ARG1 | ARG2       ARG1 if it is neither null nor 0, otherwise ARG2
+`EXPRESSION` may be:
 
-  ARG1 & ARG2       ARG1 if neither argument is null or 0, otherwise 0
+    ARG1 | ARG2       ARG1 if it is neither null nor 0, otherwise ARG2
 
-  ARG1 < ARG2       ARG1 is less than ARG2
-  ARG1 <= ARG2      ARG1 is less than or equal to ARG2
-  ARG1 = ARG2       ARG1 is equal to ARG2
-  ARG1 != ARG2      ARG1 is unequal to ARG2
-  ARG1 >= ARG2      ARG1 is greater than or equal to ARG2
-  ARG1 > ARG2       ARG1 is greater than ARG2
+    ARG1 & ARG2       ARG1 if neither argument is null or 0, otherwise 0
 
-  ARG1 + ARG2       arithmetic sum of ARG1 and ARG2
-  ARG1 - ARG2       arithmetic difference of ARG1 and ARG2
+    ARG1 < ARG2       ARG1 is less than ARG2
+    ARG1 <= ARG2      ARG1 is less than or equal to ARG2
+    ARG1 = ARG2       ARG1 is equal to ARG2
+    ARG1 != ARG2      ARG1 is unequal to ARG2
+    ARG1 >= ARG2      ARG1 is greater than or equal to ARG2
+    ARG1 > ARG2       ARG1 is greater than ARG2
 
-  ARG1 * ARG2       arithmetic product of ARG1 and ARG2
-  ARG1 / ARG2       arithmetic quotient of ARG1 divided by ARG2
-  ARG1 % ARG2       arithmetic remainder of ARG1 divided by ARG2
+    ARG1 + ARG2       arithmetic sum of ARG1 and ARG2
+    ARG1 - ARG2       arithmetic difference of ARG1 and ARG2
 
-  STRING : REGEXP   anchored pattern match of REGEXP in STRING
+    ARG1 * ARG2       arithmetic product of ARG1 and ARG2
+    ARG1 / ARG2       arithmetic quotient of ARG1 divided by ARG2
+    ARG1 % ARG2       arithmetic remainder of ARG1 divided by ARG2
 
-  match STRING REGEXP        same as STRING : REGEXP
-  substr STRING POS LENGTH   substring of STRING, POS counted from 1
-  index STRING CHARS         index in STRING where any CHARS is found, or 0
-  length STRING              length of STRING
-  + TOKEN                    interpret TOKEN as a string, even if it is a
-                               keyword like 'match' or an operator like '/'
+    STRING : REGEXP   anchored pattern match of REGEXP in STRING
 
-  ( EXPRESSION )             value of EXPRESSION
+    match STRING REGEXP        same as STRING : REGEXP
+    substr STRING POS LENGTH   substring of STRING, POS counted from 1
+    index STRING CHARS         index in STRING where any CHARS is found, or 0
+    length STRING              length of STRING
+    + TOKEN                    interpret TOKEN as a string, even if it is a
+                                 keyword like 'match' or an operator like '/'
+
+    ( EXPRESSION )             value of EXPRESSION
 
 Beware that many operators need to be escaped or quoted for shells.
 Comparisons are arithmetic if both ARGs are numbers, else lexicographical.
 Pattern matches return the string matched between \( and \) or null; if
 \( and \) are not used, they return the number of characters matched or 0.
 
-Exit status is 0 if EXPRESSION is neither null nor 0, 1 if EXPRESSION is null
-or 0, 2 if EXPRESSION is syntactically invalid, and 3 if an error occurred.
+Exit status is `0` if `EXPRESSION` is neither null nor `0`, `1` if `EXPRESSION` is null
+or `0`, `2` if `EXPRESSION` is syntactically invalid, and `3` if an error occurred.
 
 Environment variables:
-    * EXPR_DEBUG_TOKENS=1   dump expression's tokens
-    * EXPR_DEBUG_RPN=1      dump expression represented in reverse polish notation
-    * EXPR_DEBUG_SYA_STEP=1 dump each parser step
-    * EXPR_DEBUG_AST=1      dump expression represented abstract syntax tree"
\ No newline at end of file
+ - `EXPR_DEBUG_TOKENS=1`: dump expression's tokens
+ - `EXPR_DEBUG_RPN=1`: dump expression represented in reverse polish notation
+ - `EXPR_DEBUG_SYA_STEP=1`: dump each parser step
+ - `EXPR_DEBUG_AST=1`: dump expression represented abstract syntax tree
\ No newline at end of file