Add normal pipes as a possible alternative

SC3001.md

@@ -39,6 +39,16 @@ rm "$tmp"
 
 If streaming is important, the temporary file can be a named pipe, and the producer or consumer can be run as a background job.
 
+If the reading command accepts input from standard input, the process substitution can be replaced with a regular pipe:
+
+```sh
+#!/bin/sh
+program | while IFS= read -r n
+do
+  sum=$((sum+n))
+done
+```
+
 ### Rationale:
 
 Process substitution is a ksh and bash extension. It does not work in sh or dash scripts.