FIX #4826 partially: Change -f to -? in User Guide section F4.16

diff --git a/docs/users_guide/runtime_control.xml b/docs/users_guide/runtime_control.xml
index 0e13f0e..b6cc1ab 100644 (file)
--- a/docs/users_guide/runtime_control.xml
+++ b/docs/users_guide/runtime_control.xml
@@ -49,8 +49,8 @@
   wraparound in the counters is <emphasis>your</emphasis>
   fault!)</para>
 
-  <para>Giving a <literal>+RTS -f</literal>
-  <indexterm><primary><option>-f</option></primary><secondary>RTS option</secondary></indexterm> option
+  <para>Giving a <literal>+RTS -?</literal>
+  <indexterm><primary><option>-?</option></primary><secondary>RTS option</secondary></indexterm> option
   will print out the RTS options actually available in your program
   (which vary, depending on how you compiled).</para>