I must confess this is a very small tip but it really helps me out.
Usually we get help.sap.com links provided by SDN members in our posts.Unfortunately many of them are only single pages concerning one topic.Like this:
http://help.sap.com/saphelp_nw70/helpdata/en/8f/d93c00e39d5b4fb6eaa3bf16e6fb09/content.htm
It's a BI datasource help page.In most cases this is not enough, we also need to view same functional datasources or the upper level objects related to this datasource, which means a defaultly help framseset page is important and quite useful.
Now here is the way: just simply replace the "content.htm" to "frameset.htm" of the URL and reinput it to the browser like this:
http://help.sap.com/saphelp_nw70/helpdata/en/8f/d93c00e39d5b4fb6eaa3bf16e6fb09/frameset.htm
The lovely menu appears...Great!