--- a/tool/run/plugins/spdx/spdxDialog.html
+++ b/tool/run/plugins/spdx/spdxDialog.html
@@ -4,12 +4,14 @@
<body>
<form action="create?x=start" method="post">
<div style="margin-left: 10px;">
-<h2>Create SPDX</h2>Create a new SPDX from a zipped file on the Internet.<br><br>
+<h2>Create SPDX</h2>Download a zipped file from the Internet and
+create an SPDX document from its contents. Only files with extension
+.zip and .tar.gz are supported at the moment. After pressing the
+"Create SPDX" button the new document can be open from the SPDX list.<br><br>
<br>
-<div style="margin-left: 10px;">URL to zip (or tar.gz) file<br><input value="http://switch.dl.sourceforge.net/project/jfreechart/1.%20JFreeChart/1.0.17/jfreechart-1.0.17.tar.gz" size="40" name="source">
-<br><br><span style="font-style: italic;">An URL is included on the box as example</span><br></div><br>
-<br>
-Ready?<br><br>
+<div style="margin-left: 10px;">Type the download URL<br><input value="http://switch.dl.sourceforge.net/project/jfreechart/1.%20JFreeChart/1.0.17/jfreechart-1.0.17.tar.gz" size="40" name="source">
+<br><br><span style="font-style: italic;">The URL included by default on the above box is an example</span><br></div><br>
+<br>When ready, click the button<br><br>
<input value="Create SPDX" name="SubmitButton" type="submit"><br>
</div>
</form>