diff --git a/SC2031.md b/SC2031.md
index 9468d8a..b875176 100644
--- a/SC2031.md
+++ b/SC2031.md
@@ -18,13 +18,23 @@ n=0
 while read i; do (( n+=i )); done < <(printf "%s\n" {1..10})
 echo $n
 ```
-In `sh`, temporary files, FIFOs or file descriptors can be used instead. When the output of the command can be stored to a variable before entering the loop, here documents are a preferable alternative:
+In `sh`, temporary files, FIFOs or file descriptors can be used instead. When the output of the command can be stored to a variable before entering the loop, here documents are a preferable alternative.
 ```sh
 n=0
-SUMMANDS="$(printf '%s\n' 1 2 3 4 5 6 7 8 9 10)"
-while read i; do n=$(( n + i )); done <<SUMMANDS_INPUT
+SUMMANDS="1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+"
+while read i; do n=$(( n + i )); done <<SUMMANDS_HEREDOC_INPUT
 $SUMMANDS
-SUMMANDS_INPUT
+SUMMANDS_HEREDOC_INPUT
 echo $n
 ```