Advanced usage of IDA scripts to generate useful (in contrast with buildin WinGraph) call graph layouts.
Take IDC script dump-xrefs.idc from svn.
Run it over function under cursor, and you will get two files in "<your_idb_file_path>/graphs" folder (mkdir it first).
- .xml files are for the touchgraph.
In general, Touchgraph is much more practical in analysis help, but skyrails is really funny ;)