documenting proxy setup

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@278515 13f79535-47bb-0310-9956-ffa450edef68

fetch.xml

@@ -23,7 +23,16 @@
   You may also need to set proxy settings. This can be done by
   setting the JVM proxy values in the ANT_OPTS environment
   variables.
-    
+
+  For example, to set the proxy up in the tcsh shell, the command would be
+  something like:
+
+  For csh/tcsh:
+    setenv ANT_OPTS "-Dhttp.proxyHost=proxy -Dhttp.proxyPort=8080"
+  For bash:
+    export ANT_OPTS="-Dhttp.proxyHost=proxy -Dhttp.proxyPort=8080"
+  For Windows, set the environment variable in the appropriate dialog box
+  and open a new console.
 </description>
 
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