MOSS2007: Add webpart for any web part page

To add webpart for any web part page (even the one where “Edit Page” is unavailable), simply append the following text to the URL:

&ToolPaneView=2

Thus, if my original URL was:

http://moss/portal/Lists/IT%20Assets/DispForm.aspx?ID=2&Source=http%3a%2f%2ftidemo%2ftftp%2fLists%2fIT%2520Assets%2fAllItems.aspx&PageView=Shared

Then my new URL is:

http://moss/portal/Lists/IT%20Assets/DispForm.aspx?ID=2&Source=http%3a%2f%2ftidemo%2ftftp%2fLists%2fIT%2520Assets%2fAllItems.aspx&PageView=Shared&ToolPaneView=2