--- a/LineNumberReadStream.st	Thu Jul 13 12:34:30 2017 +0200
+++ b/LineNumberReadStream.st	Thu Jul 13 12:35:59 2017 +0200
@@ -46,6 +46,9 @@
 
     Can be placed in-between text processing and the text's
     input stream, and let it keep track of the lineNumber.
+    
+    For example, this is useful if you have a parser which does not keep track of 
+    line numbers, but want to present an error-line-number in a parse-error message.
 
     [see also:]
         ReadStream WriteStream ExternalStream FileStream