I want to start naming every Loci class so that the name begins with 'Loci'. I already made some changes to the code. For example, WidgetMain() ---is now---> LociWidget() Loci() (the Gnome GUI) ---is now---> LociGnome() Get the idea? Why do this? We are importing many, many modules in Loci. It's too likely class names like Widget() or Gnome() are already used by PyGTK/GNOME. The same is true for other modules. Cheers. Jeff -- +----------------------------------+ | J.W. Bizzaro | | | | http://bioinformatics.org/~jeff/ | | | | BIOINFORMATICS.ORG | | The Open Lab | | | | http://bioinformatics.org/ | +----------------------------------+