state that properties are case sensitive.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269807 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/CoreTasks/property.html

@@ -10,7 +10,7 @@
 <h2><a name="property">Property</a></h2>
 <h3>Description</h3>
 <p>Sets a property (by name and value), or set of properties (from file or
-resource) in the project.</p>
+resource) in the project.  Properties are case sensitive.</p>
 <p>When a property was set by the user, or was a property in a parent project
 (that started this project with the <a href="ant.html">ant task</a>), then this
 property cannot be set, and will be ignored. This means that properties set
@@ -90,7 +90,11 @@ href="../using.html#built-in-props">here</a>.</p>
 	allow access of environment variables through &quot;myenv.PATH&quot; and 
 	&quot;myenv.TERM&quot;. This functionality is currently only implemented 
     on select platforms. Feel free to send patches to increase the number of platforms
-    this functionality is supported on ;)</td>
+    this functionality is supported on ;).<br>
+    Note also that properties are case sensitive, even if the
+    environment variables on your operating system are not, e.g. it
+    will be ${env.Path} not ${env.PATH} on Windows 2000.</td>
+
   </tr>
   <tr>
     <td valign="top">classpath</td> 

docs/manual/using.html

@@ -190,7 +190,7 @@ task instances at all, only proxies.
 <h3>Properties</h3>
 <p>A project can have a set of properties. These might be set in the buildfile
 by the <a href="CoreTasks/property.html">property task</a>, or might be set outside Ant. A
-property has a name and a value. Properties may be used in the value of
+property has a name and a value, the name is case sensitive. Properties may be used in the value of
 task attributes. This is done by placing the property name between
 &quot;<code>${</code>&quot; and &quot;<code>}</code>&quot; in the
 attribute value. For example,