Document WAR configuration option for maxUploadSize

docs/manual/docs/user-guide/associating-resources/using-filestore.md

@@ -5,7 +5,7 @@
     3.2
 
 
-If documents are not available, editors can upload attachments to a metadata record. The document is added to the filestore. The filestore can contains any kind of files.
+If documents are not available, editors can upload attachments to a metadata record. The attachment is added to the filestore. The filestore can contain any kind of files.
 
 ![](img/filestore.png)
 
@@ -25,4 +25,15 @@ A file uploaded in this way will be exported in the metadata export file (MEF).
 
 ## Filestore configuration
 
-By default, the maximum file size is set to 100Mb. This limit is set in `/services/src/main/resources/config-spring-geonetwork.xml` with the parameter `maxUploadSize`.
+By default, the maximum file size for attachment uploads is set to 100Mb. When building GeoNetwork from source, this limit can be changed in `/services/src/main/resources/config-spring-geonetwork.xml` with the parameter `maxUploadSize`.
+
+For deployment on an application server, or for adjusting the limit in an already running web application, the value for `maxUploadSize` can be changed in `WEB-INF/config.xml` accordingly:
+
+```xml
+<general>
+    <!-- Size must be in megabyte (integer), 100MB by default -->
+    <maxUploadSize>5000</maxUploadSize>
+    <uploadDir>./data/tmp</uploadDir>
+    <debug>false</debug>
+</general>
+```